using System;
using System.Data;
using System.Xml;
using System.Data.SqlClient;
using System.Collections;
using System.Configuration;
namespace BookDAL
{
/// <summary>
/// SqlServer資料通路幫助類
/// </summary>
public sealed class SqlHelper
{
#region 私有構造函數和方法
private SqlHelper() { }
/// <summary>
/// 将SqlParameter參數數組(參數值)配置設定給SqlCommand指令.
/// 這個方法将給任何一個參數配置設定DBNull.Value;
/// 該操作将阻止預設值的使用.
/// </summary>
/// <param name="command">指令名</param>
/// <param name="commandParameters">SqlParameters數組</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)
{
// 檢查未配置設定值的輸出參數,将其配置設定以DBNull.Value.
if ((p.Direction == ParameterDirection.InputOutput || p.Direction == ParameterDirection.Input) &&
(p.Value == null))
{
p.Value = DBNull.Value;
}
command.Parameters.Add(p);
}
}
}
}
/// 将DataRow類型的列值配置設定到SqlParameter參數數組.
/// <param name="commandParameters">要配置設定值的SqlParameter參數數組</param>
/// <param name="dataRow">将要配置設定給存儲過程參數的DataRow</param>
private static void AssignParameterValues(SqlParameter[] commandParameters, DataRow dataRow)
if ((commandParameters == null) || (dataRow == null))
return;
}
int i = 0;
// 設定參數值
foreach (SqlParameter commandParameter in commandParameters)
// 建立參數名稱,如果不存在,隻抛出一個異常.
if (commandParameter.ParameterName == null ||
commandParameter.ParameterName.Length <= 1)
throw new Exception(
string.Format("請提供參數{0}一個有效的名稱{1}.", i, commandParameter.ParameterName));
// 從dataRow的表中擷取為參數數組中數組名稱的列的索引.
// 如果存在和參數名稱相同的列,則将列值賦給目前名稱的參數.
if (dataRow.Table.Columns.IndexOf(commandParameter.ParameterName.Substring(1)) != -1)
commandParameter.Value = dataRow[commandParameter.ParameterName.Substring(1)];
i++;
/// 将一個對象數組配置設定給SqlParameter參數數組.
/// <param name="parameterValues">将要配置設定給存儲過程參數的對象數組</param>
private static void AssignParameterValues(SqlParameter[] commandParameters, object[] parameterValues)
if ((commandParameters == null) || (parameterValues == null))
// 確定對象數組個數與參數個數比對,如果不比對,抛出一個異常.
if (commandParameters.Length != parameterValues.Length)
throw new ArgumentException("參數值個數與參數不比對.");
// 給參數指派
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];
/// 預處理使用者提供的指令,資料庫連接配接/事務/指令類型/參數
/// <param name="command">要處理的SqlCommand</param>
/// <param name="connection">資料庫連接配接</param>
/// <param name="transaction">一個有效的事務或者是null值</param>
/// <param name="commandType">指令類型 (存儲過程,指令文本, 其它.)</param>
/// <param name="commandText">存儲過程名或都T-SQL指令文本</param>
/// <param name="commandParameters">和指令相關聯的SqlParameter參數數組,如果沒有參數為'null'</param>
/// <param name="mustCloseConnection"><c>true</c> 如果連接配接是打開的,則為true,其它情況下為false.</param>
private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, out bool mustCloseConnection)
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;
// 給指令配置設定一個資料庫連接配接.
command.Connection = connection;
// 設定指令文本(存儲過程名或SQL語句)
command.CommandText = commandText;
// 配置設定事務
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;
// 設定指令類型.
command.CommandType = commandType;
// 配置設定指令參數
AttachParameters(command, commandParameters);
return;
#endregion 私有構造函數和方法結束
#region 資料庫連接配接
/// <summary>
/// 一個有效的資料庫連接配接字元串
/// <returns></returns>
public static string GetConnSting()
return ConfigurationManager.ConnectionStrings["ConStr"].ConnectionString;
}
/// 一個有效的資料庫連接配接對象
public static SqlConnection GetConnection()
SqlConnection Connection = new SqlConnection(SqlHelper.GetConnSting());
return Connection;
#endregion
#region ExecuteNonQuery指令
/// 執行指定連接配接字元串,類型的SqlCommand.
/// <remarks>
/// 示例:
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders");
/// </remarks>
/// <param name="connectionString">一個有效的資料庫連接配接字元串</param>
/// <param name="commandText">存儲過程名稱或SQL語句</param>
/// <returns>傳回指令影響的行數</returns>
public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText)
return ExecuteNonQuery(connectionString, commandType, commandText, (SqlParameter[])null);
/// 執行指定連接配接字元串,類型的SqlCommand.如果沒有提供參數,不傳回結果.
/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// <param name="commandParameters">SqlParameter參數數組</param>
public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString");
using (SqlConnection connection = new SqlConnection(connectionString))
connection.Open();
return ExecuteNonQuery(connection, commandType, commandText, commandParameters);
/// 執行指定連接配接字元串的存儲過程,将對象數組的值賦給存儲過程參數,
/// 此方法需要在參數緩存方法中探索參數并生成參數.
/// 這個方法沒有提供通路輸出參數和傳回值.
/// int result = ExecuteNonQuery(connString, "PublishOrders", 24, 36);
/// <param name="connectionString">一個有效的資料庫連接配接字元串/param>
/// <param name="spName">存儲過程名稱</param>
/// <param name="parameterValues">配置設定到存儲過程輸入參數的對象數組</param>
/// <returns>傳回受影響的行數</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");
// 如果存在參數值
if ((parameterValues != null) && (parameterValues.Length > 0))
// 從探索存儲過程參數(加載到緩存)并配置設定給存儲過程參數數組.
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connectionString, spName);
// 給存儲過程參數指派
AssignParameterValues(commandParameters, parameterValues);
return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
// 沒有參數情況下
return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName);
/// 執行指定資料庫連接配接對象的指令
/// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders");
/// <param name="connection">一個有效的資料庫連接配接對象</param>
/// <param name="commandType">指令類型(存儲過程,指令文本或其它.)</param>
/// <param name="commandText">存儲過程名稱或T-SQL語句</param>
/// <returns>傳回影響的行數</returns>
public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText)
return ExecuteNonQuery(connection, commandType, commandText, (SqlParameter[])null);
/// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
/// <param name="commandText">T存儲過程名稱或T-SQL語句</param>
/// <param name="commandParameters">SqlParamter參數數組</param>
public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
if (connection == null) throw new ArgumentNullException("connection");
// 建立SqlCommand指令,并進行預處理
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();
// 清除參數,以便再次使用.
cmd.Parameters.Clear();
if (mustCloseConnection)
connection.Close();
return retval;
/// 執行指定資料庫連接配接對象的指令,将對象數組的值賦給存儲過程參數.
/// 此方法不提供通路存儲過程輸出參數和傳回值
/// int result = ExecuteNonQuery(conn, "PublishOrders", 24, 36);
/// <param name="spName">存儲過程名</param>
/// <param name="parameterValues">配置設定給存儲過程輸入參數的對象數組</param>
public static int ExecuteNonQuery(SqlConnection connection, string spName, params object[] parameterValues)
if (connection == null) throw new ArgumentNullException("connection");
// 如果有參數值
// 從緩存中加載存儲過程參數
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(connection, spName);
// 給存儲過程配置設定參數值
return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName);
/// 執行帶事務的SqlCommand.
/// 示例.:
/// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "PublishOrders");
/// <param name="transaction">一個有效的資料庫連接配接對象</param>
/// <returns>傳回影響的行數/returns>
public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText)
return ExecuteNonQuery(transaction, commandType, commandText, (SqlParameter[])null);
/// 執行帶事務的SqlCommand(指定參數).
/// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
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");
// 預處理
PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
// 執行
// 清除參數集,以便再次使用.
/// 執行帶事務的SqlCommand(指定參數值).
/// int result = ExecuteNonQuery(conn, trans, "PublishOrders", 24, 36);
public static int ExecuteNonQuery(SqlTransaction transaction, string spName, params object[] parameterValues)
if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction");
// 從緩存中加載存儲過程參數,如果緩存中不存在則從資料庫中檢索參數資訊并加載到緩存中. ()
SqlParameter[] commandParameters = SqlHelperParameterCache.GetSpParameterSet(transaction.Connection, spName);
// 調用重載方法
return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
// 沒有參數值
return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName);
#endregion ExecuteNonQuery方法結束
#region ExecuteDataset方法
/// 執行指定資料庫連接配接字元串的指令,傳回DataSet.
/// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders");
/// <param name="commandType">指令類型 (存儲過程,指令文本或其它)</param>
/// <returns>傳回一個包含結果集的DataSet</returns>
public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText)
return ExecuteDataset(connectionString, commandType, commandText, (SqlParameter[])null);
/// 示例:
/// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// <param name="commandParameters">SqlParamters參數數組</param>
public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
// 建立并打開資料庫連接配接對象,操作完成釋放對象.
using (SqlConnection connection = new SqlConnection(connectionString))
// 調用指定資料庫連接配接字元串重載方法.
return ExecuteDataset(connection, commandType, commandText, commandParameters);
/// 執行指定資料庫連接配接字元串的指令,直接提供參數值,傳回DataSet.
/// 此方法不提供通路存儲過程輸出參數和傳回值.
/// DataSet ds = ExecuteDataset(connString, "GetOrders", 24, 36);
public static DataSet ExecuteDataset(string connectionString, string spName, params object[] parameterValues)
if ((parameterValues != null) && (parameterValues.Length > 0))
// 從緩存中檢索存儲過程參數
// 給存儲過程參數配置設定值
return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName);
/// 執行指定資料庫連接配接對象的指令,傳回DataSet.
/// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders");
/// <param name="commandText">存儲過程名或T-SQL語句</param>
public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText)
return ExecuteDataset(connection, commandType, commandText, (SqlParameter[])null);
/// 執行指定資料庫連接配接對象的指令,指定存儲過程參數,傳回DataSet.
/// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
// 建立SqlDataAdapter和DataSet.
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
DataSet ds = new DataSet();
// 填充DataSet.
da.Fill(ds);
cmd.Parameters.Clear();
if (mustCloseConnection)
connection.Close();
return ds;
/// 執行指定資料庫連接配接對象的指令,指定參數值,傳回DataSet.
/// 此方法不提供通路存儲過程輸入參數和傳回值.
/// DataSet ds = ExecuteDataset(conn, "GetOrders", 24, 36);
public static DataSet ExecuteDataset(SqlConnection connection, string spName, params object[] parameterValues)
// 比緩存中加載存儲過程參數
return ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteDataset(connection, CommandType.StoredProcedure, spName);
/// 執行指定事務的指令,傳回DataSet.
/// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders");
/// <param name="transaction">事務</param>
public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText)
return ExecuteDataset(transaction, commandType, commandText, (SqlParameter[])null);
/// 執行指定事務的指令,指定參數,傳回DataSet.
/// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
// 建立 DataAdapter & DataSet
DataSet ds = new DataSet();
da.Fill(ds);
cmd.Parameters.Clear();
return ds;
/// 執行指定事務的指令,指定參數值,傳回DataSet.
/// DataSet ds = ExecuteDataset(trans, "GetOrders", 24, 36);
public static DataSet ExecuteDataset(SqlTransaction transaction, string spName, params object[] parameterValues)
return ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteDataset(transaction, CommandType.StoredProcedure, spName);
#endregion ExecuteDataset資料集指令結束
#region ExecuteReader 資料閱讀器
/// 枚舉,辨別資料庫連接配接是由SqlHelper提供還是由調用者提供
private enum SqlConnectionOwnership
/// <summary>由SqlHelper提供連接配接</summary>
Internal,
/// <summary>由調用者提供連接配接</summary>
External
/// 執行指定資料庫連接配接對象的資料閱讀器.
/// 如果是SqlHelper打開連接配接,當連接配接關閉DataReader也将關閉.
/// 如果是調用都打開連接配接,DataReader由調用都管理.
/// <param name="transaction">一個有效的事務,或者為 'null'</param>
/// <param name="commandParameters">SqlParameters參數數組,如果沒有參數則為'null'</param>
/// <param name="connectionOwnership">辨別資料庫連接配接對象是由調用者提供還是由SqlHelper提供</param>
/// <returns>傳回包含結果集的SqlDataReader</returns>
private static SqlDataReader ExecuteReader(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, SqlConnectionOwnership connectionOwnership)
bool mustCloseConnection = false;
// 建立指令
try
PrepareCommand(cmd, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
// 建立資料閱讀器
SqlDataReader dataReader;
if (connectionOwnership == SqlConnectionOwnership.External)
dataReader = cmd.ExecuteReader();
dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
// 清除參數,以便再次使用..
// 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;
/// 執行指定資料庫連接配接字元串的資料閱讀器.
/// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders");
public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText)
return ExecuteReader(connectionString, commandType, commandText, (SqlParameter[])null);
/// 執行指定資料庫連接配接字元串的資料閱讀器,指定參數.
/// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// <param name="commandParameters">SqlParamter參數數組(new SqlParameter("@prodid", 24))</param>
public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
SqlConnection connection = null;
connection = new SqlConnection(connectionString);
return ExecuteReader(connection, null, commandType, commandText, commandParameters, SqlConnectionOwnership.Internal);
// If we fail to return the SqlDatReader, we need to close the connection ourselves
if (connection != null) connection.Close();
/// 執行指定資料庫連接配接字元串的資料閱讀器,指定參數值.
/// 此方法不提供通路存儲過程輸出參數和傳回值參數.
/// SqlDataReader dr = ExecuteReader(connString, "GetOrders", 24, 36);
public static SqlDataReader ExecuteReader(string connectionString, string spName, params object[] parameterValues)
return ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteReader(connectionString, CommandType.StoredProcedure, spName);
/// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders");
public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText)
return ExecuteReader(connection, commandType, commandText, (SqlParameter[])null);
/// [調用者方式]執行指定資料庫連接配接對象的資料閱讀器,指定參數.
/// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// <param name="commandText">指令類型 (存儲過程,指令文本或其它)</param>
public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
return ExecuteReader(connection, (SqlTransaction)null, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
/// [調用者方式]執行指定資料庫連接配接對象的資料閱讀器,指定參數值.
/// SqlDataReader dr = ExecuteReader(conn, "GetOrders", 24, 36);
/// <param name="spName">T存儲過程名</param>
public static SqlDataReader ExecuteReader(SqlConnection connection, string spName, params object[] parameterValues)
return ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteReader(connection, CommandType.StoredProcedure, spName);
/// [調用者方式]執行指定資料庫事務的資料閱讀器,指定參數值.
/// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders");
/// <param name="transaction">一個有效的連接配接事務</param>
public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText)
return ExecuteReader(transaction, commandType, commandText, (SqlParameter[])null);
/// [調用者方式]執行指定資料庫事務的資料閱讀器,指定參數.
/// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
/// <param name="commandParameters">配置設定給指令的SqlParamter參數數組</param>
public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
return ExecuteReader(transaction.Connection, transaction, commandType, commandText, commandParameters, SqlConnectionOwnership.External);
///
/// SqlDataReader dr = ExecuteReader(trans, "GetOrders", 24, 36);
public static SqlDataReader ExecuteReader(SqlTransaction transaction, string spName, params object[] parameterValues)
return ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteReader(transaction, CommandType.StoredProcedure, spName);
#endregion ExecuteReader資料閱讀器
#region ExecuteScalar 傳回結果集中的第一行第一列
/// 執行指定資料庫連接配接字元串的指令,傳回結果集中的第一行第一列.
/// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount");
/// <returns>傳回結果集中的第一行第一列</returns>
public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText)
// 執行參數為空的方法
return ExecuteScalar(connectionString, commandType, commandText, (SqlParameter[])null);
/// 執行指定資料庫連接配接字元串的指令,指定參數,傳回結果集中的第一行第一列.
/// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
// 建立并打開資料庫連接配接對象,操作完成釋放對象.
return ExecuteScalar(connection, commandType, commandText, commandParameters);
/// 執行指定資料庫連接配接字元串的指令,指定參數值,傳回結果集中的第一行第一列.
/// int orderCount = (int)ExecuteScalar(connString, "GetOrderCount", 24, 36);
public static object ExecuteScalar(string connectionString, string spName, params object[] parameterValues)
return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName);
/// 執行指定資料庫連接配接對象的指令,傳回結果集中的第一行第一列.
/// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount");
public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText)
return ExecuteScalar(connection, commandType, commandText, (SqlParameter[])null);
/// 執行指定資料庫連接配接對象的指令,指定參數,傳回結果集中的第一行第一列.
/// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
SqlCommand cmd = new SqlCommand();
// 執行SqlCommand指令,并傳回結果.
object retval = cmd.ExecuteScalar();
cmd.Parameters.Clear();
if (mustCloseConnection)
connection.Close();
return retval;
/// 執行指定資料庫連接配接對象的指令,指定參數值,傳回結果集中的第一行第一列.
/// int orderCount = (int)ExecuteScalar(conn, "GetOrderCount", 24, 36);
public static object ExecuteScalar(SqlConnection connection, string spName, params object[] parameterValues)
return ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteScalar(connection, CommandType.StoredProcedure, spName);
/// 執行指定資料庫事務的指令,傳回結果集中的第一行第一列.
/// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount");
public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText)
return ExecuteScalar(transaction, commandType, commandText, (SqlParameter[])null);
/// 執行指定資料庫事務的指令,指定參數,傳回結果集中的第一行第一列.
/// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24));
public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
/// 執行指定資料庫事務的指令,指定參數值,傳回結果集中的第一行第一列.
/// int orderCount = (int)ExecuteScalar(trans, "GetOrderCount", 24, 36);
public static object ExecuteScalar(SqlTransaction transaction, string spName, params object[] parameterValues)
// PPull the parameters for this stored procedure from the parameter cache ()
return ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteScalar(transaction, CommandType.StoredProcedure, spName);
#endregion ExecuteScalar
#region ExecuteXmlReader XML閱讀器
/// 執行指定資料庫連接配接對象的SqlCommand指令,并産生一個XmlReader對象做為結果集傳回.
/// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders");
/// <param name="commandText">存儲過程名稱或T-SQL語句 using "FOR XML AUTO"</param>
/// <returns>傳回XmlReader結果集對象.</returns>
public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText)
return ExecuteXmlReader(connection, commandType, commandText, (SqlParameter[])null);
/// 執行指定資料庫連接配接對象的SqlCommand指令,并産生一個XmlReader對象做為結果集傳回,指定參數.
/// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
// 建立SqlCommand指令,并進行預處理
PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection);
// 執行指令
XmlReader retval = cmd.ExecuteXmlReader();
// 清除參數,以便再次使用.
return retval;
/// 執行指定資料庫連接配接對象的SqlCommand指令,并産生一個XmlReader對象做為結果集傳回,指定參數值.
/// XmlReader r = ExecuteXmlReader(conn, "GetOrders", 24, 36);
/// <param name="spName">存儲過程名稱 using "FOR XML AUTO"</param>
public static XmlReader ExecuteXmlReader(SqlConnection connection, string spName, params object[] parameterValues)
return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName);
/// 執行指定資料庫事務的SqlCommand指令,并産生一個XmlReader對象做為結果集傳回.
/// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders");
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText)
return ExecuteXmlReader(transaction, commandType, commandText, (SqlParameter[])null);
/// 執行指定資料庫事務的SqlCommand指令,并産生一個XmlReader對象做為結果集傳回,指定參數.
/// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24));
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters)
// 執行指令
XmlReader retval = cmd.ExecuteXmlReader();
/// 執行指定資料庫事務的SqlCommand指令,并産生一個XmlReader對象做為結果集傳回,指定參數值.
/// XmlReader r = ExecuteXmlReader(trans, "GetOrders", 24, 36);
/// <returns>傳回一個包含結果集的DataSet.</returns>
public static XmlReader ExecuteXmlReader(SqlTransaction transaction, string spName, params object[] parameterValues)
return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName);
#endregion ExecuteXmlReader 閱讀器結束
#region FillDataset 填充資料集
/// 執行指定資料庫連接配接字元串的指令,映射資料表并填充資料集.
/// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"});
/// <param name="dataSet">要填充結果集的DataSet執行個體</param>
/// <param name="tableNames">表映射的資料表數組
/// 使用者定義的表名 (可有是實際的表名.)</param>
public static void FillDataset(string connectionString, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames)
if (dataSet == null) throw new ArgumentNullException("dataSet");
FillDataset(connection, commandType, commandText, dataSet, tableNames);
/// 執行指定資料庫連接配接字元串的指令,映射資料表并填充資料集.指定指令參數.
/// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
/// 使用者定義的表名 (可有是實際的表名.)
/// </param>
public static void FillDataset(string connectionString, CommandType commandType,
string commandText, DataSet dataSet, string[] tableNames,
params SqlParameter[] commandParameters)
if (dataSet == null) throw new ArgumentNullException("dataSet");
FillDataset(connection, commandType, commandText, dataSet, tableNames, commandParameters);
/// 執行指定資料庫連接配接字元串的指令,映射資料表并填充資料集,指定存儲過程參數值.
/// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, 24);
/// </param>
public static void FillDataset(string connectionString, string spName,
DataSet dataSet, string[] tableNames,
params object[] parameterValues)
FillDataset(connection, spName, dataSet, tableNames, parameterValues);
/// 執行指定資料庫連接配接對象的指令,映射資料表并填充資料集.
/// FillDataset(conn, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"});
public static void FillDataset(SqlConnection connection, CommandType commandType,
string commandText, DataSet dataSet, string[] tableNames)
FillDataset(connection, commandType, commandText, dataSet, tableNames, null);
/// 執行指定資料庫連接配接對象的指令,映射資料表并填充資料集,指定參數.
/// FillDataset(conn, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
FillDataset(connection, null, commandType, commandText, dataSet, tableNames, commandParameters);
/// 執行指定資料庫連接配接對象的指令,映射資料表并填充資料集,指定存儲過程參數值.
/// FillDataset(conn, "GetOrders", ds, new string[] {"orders"}, 24, 36);
public static void FillDataset(SqlConnection connection, string spName,
FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters);
FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames);
/// 執行指定資料庫事務的指令,映射資料表并填充資料集.
/// FillDataset(trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"});
public static void FillDataset(SqlTransaction transaction, CommandType commandType,
string commandText,
DataSet dataSet, string[] tableNames)
FillDataset(transaction, commandType, commandText, dataSet, tableNames, null);
/// 執行指定資料庫事務的指令,映射資料表并填充資料集,指定參數.
/// FillDataset(trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
FillDataset(transaction.Connection, transaction, commandType, commandText, dataSet, tableNames, commandParameters);
/// 執行指定資料庫事務的指令,映射資料表并填充資料集,指定存儲過程參數值.
/// FillDataset(trans, "GetOrders", ds, new string[]{"orders"}, 24, 36);
public static void FillDataset(SqlTransaction transaction, string spName,
FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters);
FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames);
/// [私有方法][内部調用]執行指定資料庫連接配接對象/事務的指令,映射資料表并填充資料集,DataSet/TableNames/SqlParameters.
/// FillDataset(conn, trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24));
private static void FillDataset(SqlConnection connection, SqlTransaction transaction, CommandType commandType,
SqlCommand command = new SqlCommand();
PrepareCommand(command, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection);
using (SqlDataAdapter dataAdapter = new SqlDataAdapter(command))
{
// 追加表映射
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();
// 填充資料集使用預設表名稱
dataAdapter.Fill(dataSet);
command.Parameters.Clear();
#region UpdateDataset 更新資料集
/// 執行資料集更新到資料庫,指定inserted, updated, or deleted指令.
/// UpdateDataset(conn, insertCommand, deleteCommand, updateCommand, dataSet, "Order");
/// <param name="insertCommand">[追加記錄]一個有效的T-SQL語句或存儲過程</param>
/// <param name="deleteCommand">[删除記錄]一個有效的T-SQL語句或存儲過程</param>
/// <param name="updateCommand">[更新記錄]一個有效的T-SQL語句或存儲過程</param>
/// <param name="dataSet">要更新到資料庫的DataSet</param>
/// <param name="tableName">要更新到資料庫的DataTable</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");
// 建立SqlDataAdapter,當操作完成後釋放.
using (SqlDataAdapter dataAdapter = new SqlDataAdapter())
// 設定資料擴充卡指令
dataAdapter.UpdateCommand = updateCommand;
dataAdapter.InsertCommand = insertCommand;
dataAdapter.DeleteCommand = deleteCommand;
// 更新資料集改變到資料庫
dataAdapter.Update(dataSet, tableName);
// 送出所有改變到資料集.
dataSet.AcceptChanges();
#region CreateCommand 建立一條SqlCommand指令
/// 建立SqlCommand指令,指定資料庫連接配接對象,存儲過程名和參數.
/// SqlCommand command = CreateCommand(conn, "AddCustomer", "CustomerID", "CustomerName");
/// <param name="sourceColumns">源表的列名稱數組</param>
/// <returns>傳回SqlCommand指令</returns>
public static SqlCommand CreateCommand(SqlConnection connection, string spName, params string[] sourceColumns)
// 建立指令
SqlCommand cmd = new SqlCommand(spName, connection);
cmd.CommandType = CommandType.StoredProcedure;
if ((sourceColumns != null) && (sourceColumns.Length > 0))
// 将源表的列到映射到DataSet指令中.
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;
#region ExecuteNonQueryTypedParams 類型化參數(DataRow)
/// 執行指定連接配接資料庫連接配接字元串的存儲過程,使用DataRow做為參數值,傳回受影響的行數.
/// <param name="dataRow">使用DataRow作為參數值</param>
public static int ExecuteNonQueryTypedParams(String connectionString, String spName, DataRow dataRow)
// 如果row有值,存儲過程必須初始化.
if (dataRow != null && dataRow.ItemArray.Length > 0)
// 配置設定參數值
AssignParameterValues(commandParameters, dataRow);
return SqlHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName);
/// 執行指定連接配接資料庫連接配接對象的存儲過程,使用DataRow做為參數值,傳回受影響的行數.
public static int ExecuteNonQueryTypedParams(SqlConnection connection, String spName, DataRow dataRow)
return SqlHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName);
/// 執行指定連接配接資料庫事物的存儲過程,使用DataRow做為參數值,傳回受影響的行數.
/// <param name="transaction">一個有效的連接配接事務 object</param>
public static int ExecuteNonQueryTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
// Sf the row has values, the store procedure parameters must be initialized
return SqlHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName);
#region ExecuteDatasetTypedParams 類型化參數(DataRow)
/// 執行指定連接配接資料庫連接配接字元串的存儲過程,使用DataRow做為參數值,傳回DataSet.
public static DataSet ExecuteDatasetTypedParams(string connectionString, String spName, DataRow dataRow)
//如果row有值,存儲過程必須初始化.
return SqlHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName);
/// 執行指定連接配接資料庫連接配接對象的存儲過程,使用DataRow做為參數值,傳回DataSet.
public static DataSet ExecuteDatasetTypedParams(SqlConnection connection, String spName, DataRow dataRow)
return SqlHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName);
/// 執行指定連接配接資料庫事務的存儲過程,使用DataRow做為參數值,傳回DataSet.
public static DataSet ExecuteDatasetTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
return SqlHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName);
#region ExecuteReaderTypedParams 類型化參數(DataRow)
/// 執行指定連接配接資料庫連接配接字元串的存儲過程,使用DataRow做為參數值,傳回DataReader.
public static SqlDataReader ExecuteReaderTypedParams(String connectionString, String spName, DataRow dataRow)
return SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName);
/// 執行指定連接配接資料庫連接配接對象的存儲過程,使用DataRow做為參數值,傳回DataReader.
public static SqlDataReader ExecuteReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow)
return SqlHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName);
/// 執行指定連接配接資料庫事物的存儲過程,使用DataRow做為參數值,傳回DataReader.
public static SqlDataReader ExecuteReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
return SqlHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName);
#region ExecuteScalarTypedParams 類型化參數(DataRow)
/// 執行指定連接配接資料庫連接配接字元串的存儲過程,使用DataRow做為參數值,傳回結果集中的第一行第一列.
public static object ExecuteScalarTypedParams(String connectionString, String spName, DataRow dataRow)
return SqlHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName);
/// 執行指定連接配接資料庫連接配接對象的存儲過程,使用DataRow做為參數值,傳回結果集中的第一行第一列.
public static object ExecuteScalarTypedParams(SqlConnection connection, String spName, DataRow dataRow)
return SqlHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName);
/// 執行指定連接配接資料庫事務的存儲過程,使用DataRow做為參數值,傳回結果集中的第一行第一列.
public static object ExecuteScalarTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
return SqlHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName);
#region ExecuteXmlReaderTypedParams 類型化參數(DataRow)
/// 執行指定連接配接資料庫連接配接對象的存儲過程,使用DataRow做為參數值,傳回XmlReader類型的結果集.
public static XmlReader ExecuteXmlReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow)
return SqlHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName);
/// 執行指定連接配接資料庫事務的存儲過程,使用DataRow做為參數值,傳回XmlReader類型的結果集.
public static XmlReader ExecuteXmlReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow)
return SqlHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters);
return SqlHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName);
}
/// <summary>
/// SqlHelperParameterCache提供緩存存儲過程參數,并能夠在運作時從存儲過程中探索參數.
public sealed class SqlHelperParameterCache
#region 私有方法,字段,構造函數
// 私有構造函數,妨止類被執行個體化.
private SqlHelperParameterCache() { }
// 這個方法要注意
private static Hashtable paramCache = Hashtable.Synchronized(new Hashtable());
/// 探索運作時的存儲過程,傳回SqlParameter參數數組.
/// 初始化參數值為 DBNull.Value.
/// <param name="connection">一個有效的資料庫連接配接</param>
/// <param name="includeReturnValueParameter">是否包含傳回值參數</param>
/// <returns>傳回SqlParameter參數數組</returns>
private static SqlParameter[] DiscoverSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter)
SqlCommand cmd = new SqlCommand(spName, connection);
connection.Open();
// 檢索cmd指定的存儲過程的參數資訊,并填充到cmd的Parameters參數集中.
SqlCommandBuilder.DeriveParameters(cmd);
connection.Close();
// 如果不包含傳回值參數,将參數集中的每一個參數删除.
if (!includeReturnValueParameter)
cmd.Parameters.RemoveAt(0);
// 建立參數數組
SqlParameter[] discoveredParameters = new SqlParameter[cmd.Parameters.Count];
// 将cmd的Parameters參數集複制到discoveredParameters數組.
cmd.Parameters.CopyTo(discoveredParameters, 0);
// 初始化參數值為 DBNull.Value.
foreach (SqlParameter discoveredParameter in discoveredParameters)
discoveredParameter.Value = DBNull.Value;
return discoveredParameters;
/// SqlParameter參數數組的深層拷貝.
/// <param name="originalParameters">原始參數數組</param>
/// <returns>傳回一個同樣的參數數組</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 私有方法,字段,構造函數結束
#region 緩存方法
/// 追加參數數組到緩存.
/// <param name="commandText">存儲過程名或SQL語句</param>
/// <param name="commandParameters">要緩存的參數數組</param>
public static void CacheParameterSet(string connectionString, string commandText, params SqlParameter[] commandParameters)
string hashKey = connectionString + ":" + commandText;
paramCache[hashKey] = commandParameters;
/// 從緩存中擷取參數數組.
/// <param name="connectionString">一個有效的資料庫連接配接字元</param>
/// <returns>參數數組</returns>
public static SqlParameter[] GetCachedParameterSet(string connectionString, string commandText)
SqlParameter[] cachedParameters = paramCache[hashKey] as SqlParameter[];
if (cachedParameters == null)
return null;
return CloneParameters(cachedParameters);
#endregion 緩存方法結束
#region 檢索指定的存儲過程的參數集
/// 傳回指定的存儲過程的參數集
/// 這個方法将查詢資料庫,并将資訊存儲到緩存.
public static SqlParameter[] GetSpParameterSet(string connectionString, string spName)
return GetSpParameterSet(connectionString, spName, false);
/// <param name="connectionString">一個有效的資料庫連接配接字元.</param>
public static SqlParameter[] GetSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter)
return GetSpParameterSetInternal(connection, spName, includeReturnValueParameter);
/// [内部]傳回指定的存儲過程的參數集(使用連接配接對象).
/// <param name="connection">一個有效的資料庫連接配接字元</param>
internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName)
return GetSpParameterSet(connection, spName, false);
/// [内部]傳回指定的存儲過程的參數集(使用連接配接對象)
/// <param name="includeReturnValueParameter">
/// 是否包含傳回值參數
internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter)
using (SqlConnection clonedConnection = (SqlConnection)((ICloneable)connection).Clone())
return GetSpParameterSetInternal(clonedConnection, spName, includeReturnValueParameter);
/// [私有]傳回指定的存儲過程的參數集(使用連接配接對象)
private static SqlParameter[] GetSpParameterSetInternal(SqlConnection connection, string spName, bool includeReturnValueParameter)
string hashKey = connection.ConnectionString + ":" + spName + (includeReturnValueParameter ? ":include ReturnValue Parameter" : "");
SqlParameter[] cachedParameters;
cachedParameters = paramCache[hashKey] as SqlParameter[];
SqlParameter[] spParameters = DiscoverSpParameterSet(connection, spName, includeReturnValueParameter);
paramCache[hashKey] = spParameters;
cachedParameters = spParameters;
return CloneParameters(cachedParameters);
#endregion 參數集檢索結束
}
}
如果要擷取連接配接資料連接配接對象或字元串的話，先要修改SQLHelper類中GetConnSting() 方法中的ConfigurationManager.ConnectionStrings["ConStr"].ConnectionString;才能調用。
本文轉自蓬萊仙羽51CTO部落格，原文連結：http://blog.51cto.com/dingxiaowei/1366637，如需轉載請自行聯系原作者
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