// ===============================================================================
// Microsoft Data Access Application Block for .NET// //// SQLHelper.cs//// This file contains the implementations of the SqlHelper and SqlHelperParameterCache// classes.//// For more information see the Data Access Application Block Implementation Overview. // ===============================================================================// Release history// VERSION DESCRIPTION// 2.0 Added support for FillDataset, UpdateDataset and "Param" helper methods//// ===============================================================================// Copyright (C) 2000-2001 Microsoft Corporation// All rights reserved.// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT// LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR// FITNESS FOR A PARTICULAR PURPOSE.// ==============================================================================//dfadffdfdfddddddddddddddddusing System;
using System.Data;using System.Xml;using System.Data.SqlClient;using System.Collections;namespace Microsoft.PILMS.DALCommon
{ /// <summary> /// The SqlHelper class is intended to encapsulate high performance, scalable best practices for /// common uses of SqlClient /// </summary> public sealed class SqlHelper { //public static readonly string CENTER_SQLSTR = System.Configuration.ConfigurationSettings.AppSettings["CernetDBConnstr"].ToString(); //数据库连接字符串(web.config来配置)，可以动态更改connectionString支持多数据库. public static string connectionString = System.Configuration.ConfigurationSettings.AppSettings["LmsConnectionString"].ToString();#region private utility methods & constructors
// Since this class provides only static methods, make the default constructor private to prevent
// instances from being created with "new SqlHelper()" private SqlHelper() { }/// <summary>
/// This method is used to attach array of SqlParameters to a SqlCommand. /// /// This method will assign a value of DbNull to any parameter with a direction of /// InputOutput and a value of null. /// /// This behavior will prevent default values from being used, but /// this will be the less common case than an intended pure output parameter (derived as InputOutput) /// where the user provided no input value. /// </summary> /// <param name="command">The command to which the parameters will be added</param> /// <param name="commandParameters">An array of SqlParameters to be added to command</param> private static void AttachParameters(SqlCommand command, SqlParameter[] commandParameters) { if (command == null) throw new ArgumentNullException("command"); if (commandParameters != null) { foreach (SqlParameter p in commandParameters) { if (p != null) { // Check for derived output value with no value assigned if ((p.Direction == ParameterDirection.InputOutput || p.Direction == ParameterDirection.Input) && (p.Value == null)) { p.Value = DBNull.Value; } command.Parameters.Add(p); } } } }/// <summary>
/// This method assigns dataRow column values to an array of SqlParameters /// </summary> /// <param name="commandParameters">Array of SqlParameters to be assigned values</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values</param> private static void AssignParameterValues(SqlParameter[] commandParameters, DataRow dataRow) { if ((commandParameters == null) || (dataRow == null)) { // Do nothing if we get no data return; }int i = 0;
// Set the parameters values foreach (SqlParameter commandParameter in commandParameters) { // Check the parameter name if (commandParameter.ParameterName == null || commandParameter.ParameterName.Length <= 1) throw new Exception( string.Format( "Please provide a valid parameter name on the parameter #{0}, the ParameterName property has the following value: '{1}'.", i, commandParameter.ParameterName)); if (dataRow.Table.Columns.IndexOf(commandParameter.ParameterName.Substring(1)) != -1) commandParameter.Value = dataRow[commandParameter.ParameterName.Substring(1)]; i++; } }/// <summary>
/// This method assigns an array of values to an array of SqlParameters /// </summary> /// <param name="commandParameters">Array of SqlParameters to be assigned values</param> /// <param name="parameterValues">Array of objects holding the values to be assigned</param> private static void AssignParameterValues(SqlParameter[] commandParameters, object[] parameterValues) { if ((commandParameters == null) || (parameterValues == null)) { // Do nothing if we get no data return; }// We must have the same number of values as we pave parameters to put them in
if (commandParameters.Length != parameterValues.Length) { throw new ArgumentException("Parameter count does not match Parameter Value count."); }// Iterate through the SqlParameters, assigning the values from the corresponding position in the
// value array for (int i = 0, j = commandParameters.Length; i < j; i++) { // If the current array value derives from IDbDataParameter, then assign its Value property if (parameterValues[i] is IDbDataParameter) { IDbDataParameter paramInstance = (IDbDataParameter)parameterValues[i]; if (paramInstance.Value == null) { commandParameters[i].Value = DBNull.Value; } else { commandParameters[i].Value = paramInstance.Value; } } else if (parameterValues[i] == null) { commandParameters[i].Value = DBNull.Value; } else { commandParameters[i].Value = parameterValues[i]; } } }/// <summary>
/// This method opens (if necessary) and assigns a connection, transaction, command type and parameters /// to the provided command /// </summary> /// <param name="command">The SqlCommand to be prepared</param> /// <param name="connection">A valid SqlConnection, on which to execute this command</param> /// <param name="transaction">A valid SqlTransaction, or 'null'</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParameters to be associated with the command or 'null' if no parameters are required</param> /// <param name="mustCloseConnection"><c>true</c> if the connection was opened by the method, otherwose is false.</param> private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, out bool mustCloseConnection) { if (command == null) throw new ArgumentNullException("command"); if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText");// If the provided connection is not open, we will open it
if (connection.State != ConnectionState.Open) { mustCloseConnection = true; connection.Open(); } else { mustCloseConnection = false; }// Associate the connection with the command
command.Connection = connection;// Set the command text (stored procedure name or SQL statement)
command.CommandText = commandText;// If we were provided a transaction, assign it
if (transaction != null) { if (transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); command.Transaction = transaction; }// Set the command type
command.CommandType = commandType;// Attach the command parameters if they are provided
if (commandParameters != null) { AttachParameters(command, commandParameters); } return; }#endregion private utility methods & constructors
#region ExecuteNonQuery
/// <summary>
/// Execute a SqlCommand (that returns no resultset and takes no parameters) against the database specified in /// the connection string /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders"); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteNonQuery(connectionString, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns no resultset) against the database specified in the connection string /// using the provided parameters /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");// Create & open a SqlConnection, and dispose of it after we are done
using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open();// Call the overload that takes a connection in place of the connection string
return ExecuteNonQuery(connection, commandType, commandText, commandParameters); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns no resultset) against the database specified in /// the connection string using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int result = ExecuteNonQuery(connString, "PublishOrders", 24, 36); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored prcedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(string connectionString, string spName, params object[] parameterValues) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a SqlCommand (that returns no resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders"); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteNonQuery(connection, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns no resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connection == null) throw new ArgumentNullException("connection");// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);// Finally, execute the command
int retval = cmd.ExecuteNonQuery();// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear(); if (mustCloseConnection) connection.Close(); return retval; }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int result = ExecuteNonQuery(conn, "PublishOrders", 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlConnection connection, string spName, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a SqlCommand (that returns no resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "PublishOrders"); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteNonQuery(transaction, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns no resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);// Finally, execute the command
int retval = cmd.ExecuteNonQuery();// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear(); return retval; }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int result = ExecuteNonQuery(conn, trans, "PublishOrders", 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlTransaction transaction, string spName, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName); } }#endregion ExecuteNonQuery
#region ExecuteDataset
/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in /// the connection string. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteDataset(connectionString, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");// Create & open a SqlConnection, and dispose of it after we are done
using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open();// Call the overload that takes a connection in place of the connection string
return ExecuteDataset(connection, commandType, commandText, commandParameters); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in /// the connection string using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// DataSet ds = ExecuteDataset(connString, "GetOrders", 24, 36); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(string connectionString, string spName, params object[] parameterValues) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteDataset(connection, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connection == null) throw new ArgumentNullException("connection");// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand(); cmd.CommandTimeout = 90; bool mustCloseConnection = false; PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);// Create the DataAdapter & DataSet
using (SqlDataAdapter da = new SqlDataAdapter(cmd)) { DataSet ds = new DataSet();// Fill the DataSet using default values for DataTable names, etc
da.Fill(ds);// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();if (mustCloseConnection)
connection.Close();LoadDBItegrateXML.ChJpLanguageToReplace(ds, commandText);
// Return the dataset return ds; } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// DataSet ds = ExecuteDataset(conn, "GetOrders", 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlConnection connection, string spName, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
return ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteDataset(connection, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteDataset(transaction, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);// Create the DataAdapter & DataSet
using (SqlDataAdapter da = new SqlDataAdapter(cmd)) { DataSet ds = new DataSet();// Fill the DataSet using default values for DataTable names, etc
da.Fill(ds);// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();LoadDBItegrateXML.ChJpLanguageToReplace(ds, commandText);
// Return the dataset return ds; } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// DataSet ds = ExecuteDataset(trans, "GetOrders", 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlTransaction transaction, string spName, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
return ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteDataset(transaction, CommandType.StoredProcedure, spName); } }#endregion ExecuteDataset
#region ExecuteReader
/// <summary>
/// This enum is used to indicate whether the connection was provided by the caller, or created by SqlHelper, so that /// we can set the appropriate CommandBehavior when calling ExecuteReader() /// </summary> private enum SqlConnectionOwnership { /// <summary>Connection is owned and managed by SqlHelper</summary> Internal, /// <summary>Connection is owned and managed by the caller</summary> External }/// <summary>
/// Create and prepare a SqlCommand, and call ExecuteReader with the appropriate CommandBehavior. /// </summary> /// <remarks> /// If we created and opened the connection, we want the connection to be closed when the DataReader is closed. /// /// If the caller provided the connection, we want to leave it to them to manage. /// </remarks> /// <param name="connection">A valid SqlConnection, on which to execute this command</param> /// <param name="transaction">A valid SqlTransaction, or 'null'</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParameters to be associated with the command or 'null' if no parameters are required</param> /// <param name="connectionOwnership">Indicates whether the connection parameter was provided by the caller, or created by SqlHelper</param> /// <returns>SqlDataReader containing the results of the command</returns> private static SqlDataReader ExecuteReader(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, SqlConnectionOwnership connectionOwnership) { if (connection == null) throw new ArgumentNullException("connection");bool mustCloseConnection = false;
// Create a command and prepare it for execution SqlCommand cmd = new SqlCommand(); try { PrepareCommand(cmd, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);// Create a reader
SqlDataReader dataReader;// Call ExecuteReader with the appropriate CommandBehavior
if (connectionOwnership == SqlConnectionOwnership.External) { dataReader = cmd.ExecuteReader(); } else { dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection); }// Detach the SqlParameters from the command object, so they can be used again.
// HACK: There is a problem here, the output parameter values are fletched // when the reader is closed, so if the parameters are detached from the command // then the SqlReader can磘 set its values. // When this happen, the parameters can磘 be used again in other command. bool canClear = true; foreach (SqlParameter commandParameter in cmd.Parameters) { if (commandParameter.Direction != ParameterDirection.Input) canClear = false; }if (canClear)
{ cmd.Parameters.Clear(); }return dataReader;
} catch { if (mustCloseConnection) connection.Close(); throw; } }/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in /// the connection string. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteReader(connectionString, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); SqlConnection connection = null; try { connection = new SqlConnection(connectionString); connection.Open();// Call the private overload that takes an internally owned connection in place of the connection string
return ExecuteReader(connection, null, commandType, commandText, commandParameters, SqlConnectionOwnership.Internal); } catch { // If we fail to return the SqlDatReader, we need to close the connection ourselves if (connection != null) connection.Close(); throw; }}
/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in /// the connection string using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// SqlDataReader dr = ExecuteReader(connString, "GetOrders", 24, 36); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(string connectionString, string spName, params object[] parameterValues) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);AssignParameterValues(commandParameters, parameterValues);
return ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
} else { // Otherwise we can just call the SP without params return ExecuteReader(connectionString, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteReader(connection, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { // Pass through the call to the private overload using a null transaction value and an externally owned connection return ExecuteReader(connection, (SqlTransaction)null, commandType, commandText, commandParameters, SqlConnectionOwnership.External); }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// SqlDataReader dr = ExecuteReader(conn, "GetOrders", 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlConnection connection, string spName, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);AssignParameterValues(commandParameters, parameterValues);
return ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
} else { // Otherwise we can just call the SP without params return ExecuteReader(connection, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteReader(transaction, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");// Pass through to private overload, indicating that the connection is owned by the caller
return ExecuteReader(transaction.Connection, transaction, commandType, commandText, commandParameters, SqlConnectionOwnership.External); }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// SqlDataReader dr = ExecuteReader(trans, "GetOrders", 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlTransaction transaction, string spName, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);AssignParameterValues(commandParameters, parameterValues);
return ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
} else { // Otherwise we can just call the SP without params return ExecuteReader(transaction, CommandType.StoredProcedure, spName); } }#endregion ExecuteReader
#region ExecuteScalar
/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the database specified in /// the connection string. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount"); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteScalar(connectionString, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the database specified in the connection string /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); // Create & open a SqlConnection, and dispose of it after we are done using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open();// Call the overload that takes a connection in place of the connection string
return ExecuteScalar(connection, commandType, commandText, commandParameters); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the database specified in /// the connection string using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int orderCount = (int)ExecuteScalar(connString, "GetOrderCount", 24, 36); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(string connectionString, string spName, params object[] parameterValues) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount"); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteScalar(connection, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connection == null) throw new ArgumentNullException("connection");// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand();bool mustCloseConnection = false;
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);// Execute the command & return the results
object retval = cmd.ExecuteScalar();// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();if (mustCloseConnection)
connection.Close();return retval;
}/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int orderCount = (int)ExecuteScalar(conn, "GetOrderCount", 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlConnection connection, string spName, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
return ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteScalar(connection, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount"); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteScalar(transaction, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns a 1x1 resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);// Execute the command & return the results
object retval = cmd.ExecuteScalar();// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear(); return retval; }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int orderCount = (int)ExecuteScalar(trans, "GetOrderCount", 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlTransaction transaction, string spName, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // PPull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
return ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteScalar(transaction, CommandType.StoredProcedure, spName); } }#endregion ExecuteScalar
#region ExecuteXmlReader
/// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command using "FOR XML AUTO"</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteXmlReader(connection, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command using "FOR XML AUTO"</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connection == null) throw new ArgumentNullException("connection");bool mustCloseConnection = false;
// Create a command and prepare it for execution SqlCommand cmd = new SqlCommand(); try { PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);// Create the DataAdapter & DataSet
XmlReader retval = cmd.ExecuteXmlReader();// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear();return retval;
} catch { if (mustCloseConnection) connection.Close(); throw; } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// XmlReader r = ExecuteXmlReader(conn, "GetOrders", 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure using "FOR XML AUTO"</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlConnection connection, string spName, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command using "FOR XML AUTO"</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteXmlReader(transaction, commandType, commandText, (SqlParameter[])null); }/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command using "FOR XML AUTO"</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);// Create the DataAdapter & DataSet
XmlReader retval = cmd.ExecuteXmlReader();// Detach the SqlParameters from the command object, so they can be used again
cmd.Parameters.Clear(); return retval; }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// XmlReader r = ExecuteXmlReader(trans, "GetOrders", 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlTransaction transaction, string spName, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName); } }#endregion ExecuteXmlReader
#region FillDataset
/// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in /// the connection string. /// </summary> /// <remarks> /// e.g.: /// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name)</param> public static void FillDataset(string connectionString, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (dataSet == null) throw new ArgumentNullException("dataSet");// Create & open a SqlConnection, and dispose of it after we are done
using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open();// Call the overload that takes a connection in place of the connection string
FillDataset(connection, commandType, commandText, dataSet, tableNames); } }/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> public static void FillDataset(string connectionString, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (dataSet == null) throw new ArgumentNullException("dataSet"); // Create & open a SqlConnection, and dispose of it after we are done using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open();// Call the overload that takes a connection in place of the connection string
FillDataset(connection, commandType, commandText, dataSet, tableNames, commandParameters); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in /// the connection string using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, 24); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> public static void FillDataset(string connectionString, string spName, DataSet dataSet, string[] tableNames, params object[] parameterValues) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (dataSet == null) throw new ArgumentNullException("dataSet"); // Create & open a SqlConnection, and dispose of it after we are done using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open();// Call the overload that takes a connection in place of the connection string
FillDataset(connection, spName, dataSet, tableNames, parameterValues); } }/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// FillDataset(conn, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> public static void FillDataset(SqlConnection connection, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames) { FillDataset(connection, commandType, commandText, dataSet, tableNames, null); }/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// FillDataset(conn, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> public static void FillDataset(SqlConnection connection, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames, params SqlParameter[] commandParameters) { FillDataset(connection, null, commandType, commandText, dataSet, tableNames, commandParameters); }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// FillDataset(conn, "GetOrders", ds, new string[] {"orders"}, 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> public static void FillDataset(SqlConnection connection, string spName, DataSet dataSet, string[] tableNames, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (dataSet == null) throw new ArgumentNullException("dataSet"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters); } else { // Otherwise we can just call the SP without params FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames); } }/// <summary>
/// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// FillDataset(trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> public static void FillDataset(SqlTransaction transaction, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames) { FillDataset(transaction, commandType, commandText, dataSet, tableNames, null); }/// <summary>
/// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// FillDataset(trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> public static void FillDataset(SqlTransaction transaction, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames, params SqlParameter[] commandParameters) { FillDataset(transaction.Connection, transaction, commandType, commandText, dataSet, tableNames, commandParameters); }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// FillDataset(trans, "GetOrders", ds, new string[]{"orders"}, 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> public static void FillDataset(SqlTransaction transaction, string spName, DataSet dataSet, string[] tableNames, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (dataSet == null) throw new ArgumentNullException("dataSet"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If we receive parameter values, we need to figure out where they go
if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);// Assign the provided values to these parameters based on parameter order
AssignParameterValues(commandParameters, parameterValues);// Call the overload that takes an array of SqlParameters
FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters); } else { // Otherwise we can just call the SP without params FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames); } }/// <summary>
/// Private helper method that execute a SqlCommand (that returns a resultset) against the specified SqlTransaction and SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// FillDataset(conn, trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> private static void FillDataset(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames, params SqlParameter[] commandParameters) { if (connection == null) throw new ArgumentNullException("connection"); if (dataSet == null) throw new ArgumentNullException("dataSet");// Create a command and prepare it for execution
SqlCommand command = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(command, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);// Create the DataAdapter & DataSet
using (SqlDataAdapter dataAdapter = new SqlDataAdapter(command)) {// Add the table mappings specified by the user
if (tableNames != null && tableNames.Length > 0) { string tableName = "Table"; for (int index = 0; index < tableNames.Length; index++) { if (tableNames[index] == null || tableNames[index].Length == 0) throw new ArgumentException("The tableNames parameter must contain a list of tables, a value was provided as null or empty string.", "tableNames"); dataAdapter.TableMappings.Add(tableName, tableNames[index]); tableName += (index + 1).ToString(); } }// Fill the DataSet using default values for DataTable names, etc
dataAdapter.Fill(dataSet);// Detach the SqlParameters from the command object, so they can be used again
command.Parameters.Clear(); }if (mustCloseConnection)
connection.Close(); } #endregion#region UpdateDataset
/// <summary> /// Executes the respective command for each inserted, updated, or deleted row in the DataSet. /// </summary> /// <remarks> /// e.g.: /// UpdateDataset(conn, insertCommand, deleteCommand, updateCommand, dataSet, "Order"); /// </remarks> /// <param name="insertCommand">A valid transact-SQL statement or stored procedure to insert new records into the data source</param> /// <param name="deleteCommand">A valid transact-SQL statement or stored procedure to delete records from the data source</param> /// <param name="updateCommand">A valid transact-SQL statement or stored procedure used to update records in the data source</param> /// <param name="dataSet">The DataSet used to update the data source</param> /// <param name="tableName">The DataTable used to update the data source.</param> public static void UpdateDataset(SqlCommand insertCommand, SqlCommand deleteCommand, SqlCommand updateCommand, DataSet dataSet, string tableName) { if (insertCommand == null) throw new ArgumentNullException("insertCommand"); if (deleteCommand == null) throw new ArgumentNullException("deleteCommand"); if (updateCommand == null) throw new ArgumentNullException("updateCommand"); if (tableName == null || tableName.Length == 0) throw new ArgumentNullException("tableName");// Create a SqlDataAdapter, and dispose of it after we are done
using (SqlDataAdapter dataAdapter = new SqlDataAdapter()) { // Set the data adapter commands dataAdapter.UpdateCommand = updateCommand; dataAdapter.InsertCommand = insertCommand; dataAdapter.DeleteCommand = deleteCommand;// Update the dataset changes in the data source
dataAdapter.Update(dataSet, tableName);// Commit all the changes made to the DataSet
dataSet.AcceptChanges(); } } #endregion#region CreateCommand
/// <summary> /// Simplify the creation of a Sql command object by allowing /// a stored procedure and optional parameters to be provided /// </summary> /// <remarks> /// e.g.: /// SqlCommand command = CreateCommand(conn, "AddCustomer", "CustomerID", "CustomerName"); /// </remarks> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="sourceColumns">An array of string to be assigned as the source columns of the stored procedure parameters</param> /// <returns>A valid SqlCommand object</returns> public static SqlCommand CreateCommand(SqlConnection connection, string spName, params string[] sourceColumns) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// Create a SqlCommand
SqlCommand cmd = new SqlCommand(spName, connection); cmd.CommandType = CommandType.StoredProcedure;// If we receive parameter values, we need to figure out where they go
if ((sourceColumns != null) && (sourceColumns.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);// Assign the provided source columns to these parameters based on parameter order
for (int index = 0; index < sourceColumns.Length; index++) commandParameters[index].SourceColumn = sourceColumns[index];// Attach the discovered parameters to the SqlCommand object
AttachParameters(cmd, commandParameters); }return cmd;
} #endregion#region ExecuteNonQueryTypedParams
/// <summary> /// Execute a stored procedure via a SqlCommand (that returns no resultset) against the database specified in /// the connection string using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQueryTypedParams(String connectionString, String spName, DataRow dataRow) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified SqlConnection /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQueryTypedParams(SqlConnection connection, String spName, DataRow dataRow) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified /// SqlTransaction using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="transaction">A valid SqlTransaction object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQueryTypedParams(SqlTransaction transaction, String spName, DataRow dataRow) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// Sf the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName); } } #endregion#region ExecuteDatasetTypedParams
/// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in /// the connection string using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDatasetTypedParams(string connectionString, String spName, DataRow dataRow) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");//If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the dataRow column values as the store procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDatasetTypedParams(SqlConnection connection, String spName, DataRow dataRow) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="transaction">A valid SqlTransaction object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDatasetTypedParams(SqlTransaction transaction, String spName, DataRow dataRow) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName); } }#endregion
#region ExecuteReaderTypedParams
/// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in /// the connection string using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReaderTypedParams(String connectionString, String spName, DataRow dataRow) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="transaction">A valid SqlTransaction object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName); } } #endregion#region ExecuteScalarTypedParams
/// <summary> /// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the database specified in /// the connection string using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalarTypedParams(String connectionString, String spName, DataRow dataRow) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalarTypedParams(SqlConnection connection, String spName, DataRow dataRow) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified SqlTransaction /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="transaction">A valid SqlTransaction object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalarTypedParams(SqlTransaction transaction, String spName, DataRow dataRow) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName); } } #endregion#region ExecuteXmlReaderTypedParams
/// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName); } }/// <summary>
/// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="transaction">A valid SqlTransaction object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");// If the row has values, the store procedure parameters must be initialized
if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);// Set the parameters values
AssignParameterValues(commandParameters, dataRow);return SqlHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
} else { return SqlHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName); } } #endregion
#region 一些简单的sql方法
/// <summary>
/// 执行查询语句，返回DataSet /// </summary> /// <param name="SQLString">查询语句</param> /// <returns>DataSet</returns> public static DataSet Query(string SQLString) { using (SqlConnection connection = new SqlConnection(connectionString)) { DataSet ds = new DataSet(); try { connection.Open(); SqlDataAdapter command = new SqlDataAdapter(SQLString, connection); command.Fill(ds, "ds"); LoadDBItegrateXML.ChJpLanguageToReplace(ds, SQLString); } catch (System.Data.SqlClient.SqlException ex) { throw new Exception(ex.Message); } return ds; } } #endregion#region add by yxian 2009-12-8 存储过程操作
/// <summary>
/// 执行存储过程，返回SqlDataReader ( 注意：调用该方法后，一定要对SqlDataReader进行Close ) /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <returns>SqlDataReader</returns> public static SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters) { SqlConnection connection = new SqlConnection(connectionString); SqlDataReader returnReader; connection.Open(); SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters); command.CommandType = CommandType.StoredProcedure; returnReader = command.ExecuteReader(CommandBehavior.CloseConnection); return returnReader;}
/// <summary> /// 执行存储过程 /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <param name="tableName">DataSet结果中的表名</param> /// <returns>DataSet</returns> public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName) { using (SqlConnection connection = new SqlConnection(connectionString)) { DataSet dataSet = new DataSet(); connection.Open(); SqlDataAdapter sqlDA = new SqlDataAdapter(); sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters); sqlDA.Fill(dataSet, tableName); connection.Close(); LoadDBItegrateXML.ChJpLanguageToReplace(dataSet, storedProcName); return dataSet; } } public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName, int Times) { using (SqlConnection connection = new SqlConnection(connectionString)) { DataSet dataSet = new DataSet(); connection.Open(); SqlDataAdapter sqlDA = new SqlDataAdapter(); sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters); sqlDA.SelectCommand.CommandTimeout = Times; sqlDA.Fill(dataSet, tableName); connection.Close(); LoadDBItegrateXML.ChJpLanguageToReplace(dataSet, storedProcName); return dataSet; } } /// <summary> /// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值) /// </summary> /// <param name="connection">数据库连接</param> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <returns>SqlCommand</returns> private static SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters) { SqlCommand command = new SqlCommand(storedProcName, connection); command.CommandType = CommandType.StoredProcedure; if (parameters != null) { foreach (SqlParameter parameter in parameters) { if (parameter != null) { // 检查未分配值的输出参数,将其分配以DBNull.Value. if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) && (parameter.Value == null)) { parameter.Value = DBNull.Value; } command.Parameters.Add(parameter); } } }return command;
}/// <summary>
/// 执行存储过程，返回影响的行数 /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <param name="rowsAffected">影响的行数</param> /// <returns></returns> public static int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected) { using (SqlConnection connection = new SqlConnection(connectionString)) { int result; connection.Open(); SqlCommand command = BuildIntCommand(connection, storedProcName, parameters); rowsAffected = command.ExecuteNonQuery(); result = (int)command.Parameters["ReturnValue"].Value; connection.Close(); return rowsAffected; } }/// <summary>
/// 创建 SqlCommand 对象实例(用来返回一个整数值) /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <returns>SqlCommand 对象实例</returns> private static SqlCommand BuildIntCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters) { SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters); command.Parameters.Add(new SqlParameter("ReturnValue", SqlDbType.Int, 4, ParameterDirection.ReturnValue, false, 0, 0, string.Empty, DataRowVersion.Default, null)); return command; }#region 增加对事务的支持 借鉴了sqlhelper中的方法
/// <summary> /// 数据库层事务 /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <param name="rowsAffected">影响的行数</param> /// <returns></returns> public static int RunProcedure(SqlTransaction transaction, string storedProcName, IDataParameter[] parameters, out int rowsAffected) {if (transaction == null) throw new ArgumentNullException("transaction");
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");// Create a command and prepare it for execution
SqlCommand cmd = new SqlCommand(); CommandType commandType = CommandType.StoredProcedure; bool mustCloseConnection = false; PrepareCommand(cmd, transaction.Connection, transaction, commandType, storedProcName, parameters, out mustCloseConnection);
cmd.Parameters.Add(new SqlParameter("ReturnValue",
SqlDbType.Int, 4, ParameterDirection.ReturnValue, false, 0, 0, string.Empty, DataRowVersion.Default, null));// Finally, execute the command
rowsAffected = cmd.ExecuteNonQuery(); // Detach the SqlParameters from the command object, so they can be used again int retval; retval = (int)cmd.Parameters["ReturnValue"].Value; cmd.Parameters.Clear(); return retval;
}
/// <summary>
/// /// </summary> /// <param name="command"></param> /// <param name="connection"></param> /// <param name="transaction"></param> /// <param name="commandType"></param> /// <param name="commandText"></param> /// <param name="commandParameters"></param> /// <param name="mustCloseConnection"></param> private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, IDataParameter[] commandParameters, out bool mustCloseConnection) { if (command == null) throw new ArgumentNullException("command"); if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText");// If the provided connection is not open, we will open it
if (connection.State != ConnectionState.Open) { mustCloseConnection = true; connection.Open(); } else { mustCloseConnection = false; }// Associate the connection with the command
command.Connection = connection;// Set the command text (stored procedure name or SQL statement)
command.CommandText = commandText;// If we were provided a transaction, assign it
if (transaction != null) { if (transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); command.Transaction = transaction; }// Set the command type
command.CommandType = commandType;// Attach the command parameters if they are provided
if (commandParameters != null) { AttachParameters(command, commandParameters); } return; }private static void AttachParameters(SqlCommand command, IDataParameter[] commandParameters)
{ if (command == null) throw new ArgumentNullException("command"); if (commandParameters != null) { foreach (SqlParameter p in commandParameters) { if (p != null) { // Check for derived output value with no value assigned if ((p.Direction == ParameterDirection.InputOutput || p.Direction == ParameterDirection.Input) && (p.Value == null)) { p.Value = DBNull.Value; } command.Parameters.Add(p); } } } } #endregion #endregion}
/// <summary>
/// SqlHelperParameterCache provides functions to leverage a static cache of procedure parameters, and the /// ability to discover parameters for stored procedures at run-time. /// </summary> public sealed class SqlHelperParameterCache { #region private methods, variables, and constructors//Since this class provides only static methods, make the default constructor private to prevent
//instances from being created with "new SqlHelperParameterCache()" private SqlHelperParameterCache() { }private static Hashtable paramCache = Hashtable.Synchronized(new Hashtable());
/// <summary>
/// Resolve at run time the appropriate set of SqlParameters for a stored procedure /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="includeReturnValueParameter">Whether or not to include their return value parameter</param> /// <returns>The parameter array discovered.</returns> private static SqlParameter[] DiscoverSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");SqlCommand cmd = new SqlCommand(spName, connection);
cmd.CommandType = CommandType.StoredProcedure;connection.Open();
SqlCommandBuilder.DeriveParameters(cmd); connection.Close();if (!includeReturnValueParameter)
{ cmd.Parameters.RemoveAt(0); }SqlParameter[] discoveredParameters = new SqlParameter[cmd.Parameters.Count];
cmd.Parameters.CopyTo(discoveredParameters, 0);
// Init the parameters with a DBNull value
foreach (SqlParameter discoveredParameter in discoveredParameters) { discoveredParameter.Value = DBNull.Value; } return discoveredParameters; }/// <summary>
/// Deep copy of cached SqlParameter array /// </summary> /// <param name="originalParameters"></param> /// <returns></returns> private static SqlParameter[] CloneParameters(SqlParameter[] originalParameters) { SqlParameter[] clonedParameters = new SqlParameter[originalParameters.Length];for (int i = 0, j = originalParameters.Length; i < j; i++)
{ clonedParameters[i] = (SqlParameter)((ICloneable)originalParameters[i]).Clone(); }return clonedParameters;
}#endregion private methods, variables, and constructors
#region caching functions
/// <summary>
/// Add parameter array to the cache /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters to be cached</param> public static void CacheParameterSet(string connectionString, string commandText, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText");string hashKey = connectionString + ":" + commandText;
paramCache[hashKey] = commandParameters;
}/// <summary>
/// Retrieve a parameter array from the cache /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An array of SqlParamters</returns> public static SqlParameter[] GetCachedParameterSet(string connectionString, string commandText) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText");string hashKey = connectionString + ":" + commandText;
SqlParameter[] cachedParameters = paramCache[hashKey] as SqlParameter[];
if (cachedParameters == null) { return null; } else { return CloneParameters(cachedParameters); } }#endregion caching functions
#region Parameter Discovery Functions
/// <summary>
/// Retrieves the set of SqlParameters appropriate for the stored procedure /// </summary> /// <remarks> /// This method will query the database for this information, and then store it in a cache for future requests. /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <returns>An array of SqlParameters</returns> public static SqlParameter[] GetSpParameterSet(string connectionString, string spName) { return GetSpParameterSet(connectionString, spName, false); }/// <summary>
/// Retrieves the set of SqlParameters appropriate for the stored procedure /// </summary> /// <remarks> /// This method will query the database for this information, and then store it in a cache for future requests. /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="includeReturnValueParameter">A bool value indicating whether the return value parameter should be included in the results</param> /// <returns>An array of SqlParameters</returns> public static SqlParameter[] GetSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");using (SqlConnection connection = new SqlConnection(connectionString))
{ return GetSpParameterSetInternal(connection, spName, includeReturnValueParameter); } }/// <summary>
/// Retrieves the set of SqlParameters appropriate for the stored procedure /// </summary> /// <remarks> /// This method will query the database for this information, and then store it in a cache for future requests. /// </remarks> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <returns>An array of SqlParameters</returns> internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName) { return GetSpParameterSet(connection, spName, false); }/// <summary>
/// Retrieves the set of SqlParameters appropriate for the stored procedure /// </summary> /// <remarks> /// This method will query the database for this information, and then store it in a cache for future requests. /// </remarks> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="includeReturnValueParameter">A bool value indicating whether the return value parameter should be included in the results</param> /// <returns>An array of SqlParameters</returns> internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter) { if (connection == null) throw new ArgumentNullException("connection"); using (SqlConnection clonedConnection = (SqlConnection)((ICloneable)connection).Clone()) { return GetSpParameterSetInternal(clonedConnection, spName, includeReturnValueParameter); } }/// <summary>
/// Retrieves the set of SqlParameters appropriate for the stored procedure /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="includeReturnValueParameter">A bool value indicating whether the return value parameter should be included in the results</param> /// <returns>An array of SqlParameters</returns> private static SqlParameter[] GetSpParameterSetInternal(SqlConnection connection, string spName, bool includeReturnValueParameter) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName");string hashKey = connection.ConnectionString + ":" + spName + (includeReturnValueParameter ? ":include ReturnValue Parameter" : "");
SqlParameter[] cachedParameters;
cachedParameters = paramCache[hashKey] as SqlParameter[];
if (cachedParameters == null) { SqlParameter[] spParameters = DiscoverSpParameterSet(connection, spName, includeReturnValueParameter); paramCache[hashKey] = spParameters; cachedParameters = spParameters; }return CloneParameters(cachedParameters);
}#endregion Parameter Discovery Functions
}
}