771 lines
36 KiB
C#
771 lines
36 KiB
C#
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using System;
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using System.Collections;
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using System.Data;
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using Easy4net.Common;
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namespace Easy4net.DBUtility
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{
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/// <summary>
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/// 数据库操作帮助类
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/// </summary>
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public class AdoHelper
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{
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//获取数据库类型
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//private static string strDbType = CommonUtils.GetConfigValueByKey("dbType").ToUpper();
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//将数据库类型转换成枚举类型
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//public static DatabaseType DbType = DatabaseTypeEnumParse<DatabaseType>(strDbType);
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//获取数据库连接字符串
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//public static string ConnectionString = GetConnectionString("connectionString");
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//获取数据库命名参数符号，比如@(SQLSERVER)、:(ORACLE)
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//public static string DbParmChar = DbFactory.CreateDbParmCharacter();
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private static Hashtable parmCache = Hashtable.Synchronized(new Hashtable());
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/// <summary>
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///通过提供的参数，执行无结果集的数据库操作命令
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/// 并返回执行数据库操作所影响的行数。
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/// </summary>
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/// <param name="dbFactory">数据库配置对象</param>
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/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
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/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
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/// <param name="commandParameters">执行命令所需的参数数组</param>
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/// <returns>返回通过执行命令所影响的行数</returns>
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public static int ExecuteNonQuery(DbFactory dbFactory, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
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{
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IDbCommand cmd = dbFactory.CreateDbCommand();
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using (IDbConnection conn = dbFactory.CreateDbConnection())
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{
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PrepareCommand(dbFactory, cmd, conn, null, cmdType, cmdText, commandParameters);
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int val = cmd.ExecuteNonQuery();
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cmd.Parameters.Clear();
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return val;
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}
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}
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/// <summary>
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///通过提供的参数，执行无结果集的数据库操作命令
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/// 并返回执行数据库操作所影响的行数。
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/// </summary>
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/// <param name="dbFactory">数据库配置对象</param>
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/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
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/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
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/// <returns>返回通过执行命令所影响的行数</returns>
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public static int ExecuteNonQuery(DbFactory dbFactory, CommandType cmdType, string cmdText)
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{
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IDbCommand cmd = dbFactory.CreateDbCommand();
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using (IDbConnection conn = dbFactory.CreateDbConnection())
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{
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PrepareCommand(dbFactory, cmd, conn, null, cmdType, cmdText, null);
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int val = cmd.ExecuteNonQuery();
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cmd.Parameters.Clear();
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return val;
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}
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}
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/// <summary>
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///通过提供的参数，执行无结果集返回的数据库操作命令
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///并返回执行数据库操作所影响的行数。
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/// </summary>
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/// <remarks>
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/// e.g.:
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/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
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/// </remarks>
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/// <param name="dbFactory">数据库配置对象</param>
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/// <param name="connection">数据库连接对象</param>
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/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
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/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
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/// <param name="commandParameters">执行命令所需的参数数组</param>
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/// <returns>返回通过执行命令所影响的行数</returns>
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public static int ExecuteNonQuery(DbFactory dbFactory, IDbConnection connection, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
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{
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IDbCommand cmd = dbFactory.CreateDbCommand();
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PrepareCommand(dbFactory, cmd, connection, null, cmdType, cmdText, commandParameters);
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int val = cmd.ExecuteNonQuery();
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cmd.Parameters.Clear();
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return val;
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}
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/// <summary>
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///通过提供的参数，执行无结果集返回的数据库操作命令
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///并返回执行数据库操作所影响的行数。
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/// </summary>
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/// <remarks>
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/// e.g.:
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/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
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/// </remarks>
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/// <param name="dbFactory">数据库配置对象</param>
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/// <param name="connection">数据库连接对象</param>
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/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
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/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
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/// <returns>返回通过执行命令所影响的行数</returns>
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public static int ExecuteNonQuery(DbFactory dbFactory, IDbConnection connection, CommandType cmdType, string cmdText)
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{
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IDbCommand cmd = dbFactory.CreateDbCommand();
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PrepareCommand(dbFactory, cmd, connection, null, cmdType, cmdText, null);
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int val = cmd.ExecuteNonQuery();
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cmd.Parameters.Clear();
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return val;
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}
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/// <summary>
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///通过提供的参数，执行无结果集返回的数据库操作命令
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///并返回执行数据库操作所影响的行数。
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/// </summary>
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/// <remarks>
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/// e.g.:
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/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
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/// </remarks>
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/// <param name="dbFactory">数据库配置对象</param>
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/// <param name="connection">数据库连接对象</param>
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/// <param name="transaction"></param>
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/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
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/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
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/// <returns>返回通过执行命令所影响的行数</returns>
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public static int ExecuteNonQuery(DbFactory dbFactory, IDbConnection connection, IDbTransaction transaction, CommandType cmdType, string cmdText)
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{
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IDbCommand cmd = dbFactory.CreateDbCommand();
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PrepareCommand(dbFactory, cmd, connection, transaction, cmdType, cmdText, null);
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int val = cmd.ExecuteNonQuery();
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cmd.Parameters.Clear();
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return val;
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}
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/// <summary>
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///通过提供的参数，执行无结果集返回的数据库操作命令
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///并返回执行数据库操作所影响的行数。
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/// </summary>
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/// <remarks>
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/// e.g.:
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/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
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/// </remarks>
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/// <param name="dbFactory">数据库配置对象</param>
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/// <param name="connection">数据库连接对象</param>
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/// <param name="transaction"></param>
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/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
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/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
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/// <param name="commandParameters"></param>
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/// <returns>返回通过执行命令所影响的行数</returns>
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public static int ExecuteNonQuery(DbFactory dbFactory, IDbConnection connection, IDbTransaction transaction, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
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{
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IDbCommand cmd = dbFactory.CreateDbCommand();
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PrepareCommand(dbFactory, cmd, connection, transaction, cmdType, cmdText, commandParameters);
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int val = cmd.ExecuteNonQuery();
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cmd.Parameters.Clear();
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return val;
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}
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/// <summary>
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///通过提供的参数，执行无结果集返回的数据库操作命令
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///并返回执行数据库操作所影响的行数。
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/// </summary>
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/// <remarks>
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/// e.g.:
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/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
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/// </remarks>
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/// <param name="dbFactory">数据库配置对象</param>
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/// <param name="trans">sql事务对象</param>
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/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
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/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
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/// <param name="commandParameters">执行命令所需的参数数组</param>
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/// <returns>返回通过执行命令所影响的行数</returns>
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public static int ExecuteNonQuery(DbFactory dbFactory, IDbTransaction trans, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
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{
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int val = 0;
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IDbCommand cmd = dbFactory.CreateDbCommand();
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if (trans == null || trans.Connection == null)
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{
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using (IDbConnection conn = dbFactory.CreateDbConnection())
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{
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PrepareCommand(dbFactory, cmd, conn, trans, cmdType, cmdText, commandParameters);
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val = cmd.ExecuteNonQuery();
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}
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}
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else
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{
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PrepareCommand(dbFactory, cmd, trans.Connection, trans, cmdType, cmdText, commandParameters);
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val = cmd.ExecuteNonQuery();
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}
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cmd.Parameters.Clear();
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return val;
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}
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/// <summary>
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///通过提供的参数，执行无结果集返回的数据库操作命令
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///并返回执行数据库操作所影响的行数。
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/// </summary>
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/// <remarks>
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/// e.g.:
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/// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
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/// </remarks>
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/// <param name="dbFactory">数据库配置对象</param>
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/// <param name="trans">sql事务对象</param>
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/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
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/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
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/// <returns>返回通过执行命令所影响的行数</returns>
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public static int ExecuteNonQuery(DbFactory dbFactory, IDbTransaction trans, CommandType cmdType, string cmdText)
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{
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IDbCommand cmd = dbFactory.CreateDbCommand();
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PrepareCommand(dbFactory, cmd, trans.Connection, trans, cmdType, cmdText, null);
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int val = cmd.ExecuteNonQuery();
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cmd.Parameters.Clear();
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return val;
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}
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/// <summary>
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/// 使用提供的参数，执行有结果集返回的数据库操作命令
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/// 并返回SqlDataReader对象
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/// </summary>
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/// <remarks>
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/// e.g.:
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/// SqlDataReader r = ExecuteReader(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
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/// </remarks>
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/// <param name="dbFactory">数据库配置对象</param>
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/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
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/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
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/// <param name="commandParameters">执行命令所需的参数数组</param>
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/// <returns>返回SqlDataReader对象</returns>
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public static IDataReader ExecuteReader(DbFactory dbFactory, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
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{
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IDbCommand cmd = dbFactory.CreateDbCommand();
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IDbConnection conn = dbFactory.CreateDbConnection();
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//我们在这里使用一个 try/catch,因为如果PrepareCommand方法抛出一个异常，我们想在捕获代码里面关闭
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//connection连接对象，因为异常发生datareader将不会存在，所以commandBehaviour.CloseConnection
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//将不会执行。
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try
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{
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PrepareCommand(dbFactory, cmd, conn, null, cmdType, cmdText, commandParameters);
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IDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
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cmd.Parameters.Clear();
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return rdr;
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}
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catch
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{
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conn.Close();
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cmd.Dispose();
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throw;
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}
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}
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/// <summary>
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/// 使用提供的参数，执行有结果集返回的数据库操作命令
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/// 并返回SqlDataReader对象
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/// </summary>
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/// <remarks>
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/// e.g.:
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/// SqlDataReader r = ExecuteReader(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
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/// </remarks>
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/// <param name="dbFactory">数据库配置对象</param>
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/// <param name="trans"></param>
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/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
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/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
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/// <param name="commandParameters">执行命令所需的参数数组</param>
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/// <returns>返回SqlDataReader对象</returns>
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public static IDataReader ExecuteReader(DbFactory dbFactory, IDbTransaction trans, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
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{
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IDbCommand cmd = dbFactory.CreateDbCommand();
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IDbConnection conn = trans.Connection;
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//我们在这里使用一个 try/catch,因为如果PrepareCommand方法抛出一个异常，我们想在捕获代码里面关闭
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//connection连接对象，因为异常发生datareader将不会存在，所以commandBehaviour.CloseConnection
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//将不会执行。
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try
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{
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PrepareCommand(dbFactory, cmd, conn, null, cmdType, cmdText, commandParameters);
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IDataReader rdr = cmd.ExecuteReader();
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cmd.Parameters.Clear();
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return rdr;
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}
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catch
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{
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conn.Close();
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cmd.Dispose();
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throw;
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}
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}
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/// <summary>
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/// 使用提供的参数，执行有结果集返回的数据库操作命令
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/// 并返回SqlDataReader对象
|
|||
|
|
/// </summary>
|
|||
|
|
/// <remarks>
|
|||
|
|
/// e.g.:
|
|||
|
|
/// SqlDataReader r = ExecuteReader(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
|
|||
|
|
/// </remarks>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="closeConnection">读取完关闭Reader是否同时也关闭数据库连接</param>
|
|||
|
|
/// <param name="connection">数据库链接</param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
|
|||
|
|
/// <param name="commandParameters">执行命令所需的参数数组</param>
|
|||
|
|
/// <returns>返回SqlDataReader对象</returns>
|
|||
|
|
public static IDataReader ExecuteReader(DbFactory dbFactory, bool closeConnection, IDbConnection connection, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
|
|||
|
|
{
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
IDbConnection conn = connection;
|
|||
|
|
|
|||
|
|
//我们在这里使用一个 try/catch,因为如果PrepareCommand方法抛出一个异常，我们想在捕获代码里面关闭
|
|||
|
|
//connection连接对象，因为异常发生datareader将不会存在，所以commandBehaviour.CloseConnection
|
|||
|
|
//将不会执行。
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
PrepareCommand(dbFactory, cmd, conn, null, cmdType, cmdText, commandParameters);
|
|||
|
|
IDataReader rdr = closeConnection ? cmd.ExecuteReader(CommandBehavior.CloseConnection) : cmd.ExecuteReader();
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
return rdr;
|
|||
|
|
}
|
|||
|
|
catch
|
|||
|
|
{
|
|||
|
|
conn.Close();
|
|||
|
|
cmd.Dispose();
|
|||
|
|
throw;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
///使用提供的参数，执行有结果集返回的数据库操作命令
|
|||
|
|
/// 并返回SqlDataReader对象
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
|
|||
|
|
/// <returns>返回SqlDataReader对象</returns>
|
|||
|
|
public static IDataReader ExecuteReader(DbFactory dbFactory, CommandType cmdType, string cmdText)
|
|||
|
|
{
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
IDbConnection conn = dbFactory.CreateDbConnection();
|
|||
|
|
|
|||
|
|
//我们在这里使用一个 try/catch,因为如果PrepareCommand方法抛出一个异常，我们想在捕获代码里面关闭
|
|||
|
|
//connection连接对象，因为异常发生datareader将不会存在，所以commandBehaviour.CloseConnection
|
|||
|
|
//将不会执行。
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
PrepareCommand(dbFactory, cmd, conn, null, cmdType, cmdText, null);
|
|||
|
|
IDataReader rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
return rdr;
|
|||
|
|
}
|
|||
|
|
catch (Exception ex)
|
|||
|
|
{
|
|||
|
|
conn.Close();
|
|||
|
|
cmd.Dispose();
|
|||
|
|
throw ex;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
///使用提供的参数，执行有结果集返回的数据库操作命令
|
|||
|
|
/// 并返回SqlDataReader对象
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="trans"></param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
|
|||
|
|
/// <returns>返回SqlDataReader对象</returns>
|
|||
|
|
public static IDataReader ExecuteReader(DbFactory dbFactory, IDbTransaction trans, CommandType cmdType, string cmdText)
|
|||
|
|
{
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
IDbConnection conn = trans.Connection;
|
|||
|
|
|
|||
|
|
//我们在这里使用一个 try/catch,因为如果PrepareCommand方法抛出一个异常，我们想在捕获代码里面关闭
|
|||
|
|
//connection连接对象，因为异常发生datareader将不会存在，所以commandBehaviour.CloseConnection
|
|||
|
|
//将不会执行。
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
PrepareCommand(dbFactory, cmd, conn, null, cmdType, cmdText, null);
|
|||
|
|
IDataReader rdr = cmd.ExecuteReader();
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
return rdr;
|
|||
|
|
}
|
|||
|
|
catch (Exception ex)
|
|||
|
|
{
|
|||
|
|
conn.Close();
|
|||
|
|
cmd.Dispose();
|
|||
|
|
throw ex;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
///使用提供的参数，执行有结果集返回的数据库操作命令
|
|||
|
|
/// 并返回SqlDataReader对象
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="closeConnection">读取完关闭Reader是否同时也关闭数据库连接</param>
|
|||
|
|
/// <param name="connection">数据库链接</param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
|
|||
|
|
/// <returns>返回SqlDataReader对象</returns>
|
|||
|
|
public static IDataReader ExecuteReader(DbFactory dbFactory, bool closeConnection, IDbConnection connection, CommandType cmdType, string cmdText)
|
|||
|
|
{
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
IDbConnection conn = connection;
|
|||
|
|
|
|||
|
|
//我们在这里使用一个 try/catch,因为如果PrepareCommand方法抛出一个异常，我们想在捕获代码里面关闭
|
|||
|
|
//connection连接对象，因为异常发生datareader将不会存在，所以commandBehaviour.CloseConnection
|
|||
|
|
//将不会执行。
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
PrepareCommand(dbFactory, cmd, conn, null, cmdType, cmdText, null);
|
|||
|
|
IDataReader rdr = closeConnection ? cmd.ExecuteReader(CommandBehavior.CloseConnection) : cmd.ExecuteReader();
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
return rdr;
|
|||
|
|
}
|
|||
|
|
catch (Exception ex)
|
|||
|
|
{
|
|||
|
|
conn.Close();
|
|||
|
|
cmd.Dispose();
|
|||
|
|
throw ex;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// 查询数据填充到数据集DataSet中
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">命令文本</param>
|
|||
|
|
/// <param name="commandParameters">参数数组</param>
|
|||
|
|
/// <returns>数据集DataSet对象</returns>
|
|||
|
|
public static DataSet dataSet(DbFactory dbFactory, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
|
|||
|
|
{
|
|||
|
|
DataSet ds = new DataSet();
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
IDbConnection conn = dbFactory.CreateDbConnection();
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
PrepareCommand(dbFactory, cmd, conn, null, cmdType, cmdText, commandParameters);
|
|||
|
|
IDbDataAdapter sda = dbFactory.CreateDataAdapter(cmd);
|
|||
|
|
sda.Fill(ds);
|
|||
|
|
return ds;
|
|||
|
|
}
|
|||
|
|
catch
|
|||
|
|
{
|
|||
|
|
conn.Close();
|
|||
|
|
cmd.Dispose();
|
|||
|
|
throw;
|
|||
|
|
}
|
|||
|
|
finally
|
|||
|
|
{
|
|||
|
|
conn.Close();
|
|||
|
|
cmd.Dispose();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// 查询数据填充到数据集DataSet中
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">命令文本</param>
|
|||
|
|
/// <returns>数据集DataSet对象</returns>
|
|||
|
|
public static DataSet dataSet(DbFactory dbFactory, CommandType cmdType, string cmdText)
|
|||
|
|
{
|
|||
|
|
DataSet ds = new DataSet();
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
IDbConnection conn = dbFactory.CreateDbConnection();
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
PrepareCommand(dbFactory, cmd, conn, null, cmdType, cmdText, null);
|
|||
|
|
IDbDataAdapter sda = dbFactory.CreateDataAdapter(cmd);
|
|||
|
|
sda.Fill(ds);
|
|||
|
|
return ds;
|
|||
|
|
}
|
|||
|
|
catch
|
|||
|
|
{
|
|||
|
|
conn.Close();
|
|||
|
|
cmd.Dispose();
|
|||
|
|
throw;
|
|||
|
|
}
|
|||
|
|
finally
|
|||
|
|
{
|
|||
|
|
conn.Close();
|
|||
|
|
cmd.Dispose();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// 依靠数据库连接字符串connectionString,
|
|||
|
|
/// 使用所提供参数，执行返回首行首列命令
|
|||
|
|
/// </summary>
|
|||
|
|
/// <remarks>
|
|||
|
|
/// e.g.:
|
|||
|
|
/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
|
|||
|
|
/// </remarks>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
|
|||
|
|
/// <param name="commandParameters">执行命令所需的参数数组</param>
|
|||
|
|
/// <returns>返回一个对象，使用Convert.To{Type}将该对象转换成想要的数据类型。</returns>
|
|||
|
|
public static object ExecuteScalar(DbFactory dbFactory, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
|
|||
|
|
{
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
|
|||
|
|
using (IDbConnection connection = dbFactory.CreateDbConnection())
|
|||
|
|
{
|
|||
|
|
PrepareCommand(dbFactory, cmd, connection, null, cmdType, cmdText, commandParameters);
|
|||
|
|
object val = cmd.ExecuteScalar();
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
return val;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
/// <summary>
|
|||
|
|
/// 依靠数据库连接字符串connectionString,
|
|||
|
|
/// 使用所提供参数，执行返回首行首列命令
|
|||
|
|
/// </summary>
|
|||
|
|
/// <remarks>
|
|||
|
|
/// e.g.:
|
|||
|
|
/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
|
|||
|
|
/// </remarks>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
|
|||
|
|
/// <returns>返回一个对象，使用Convert.To{Type}将该对象转换成想要的数据类型。</returns>
|
|||
|
|
public static object ExecuteScalar(DbFactory dbFactory, CommandType cmdType, string cmdText)
|
|||
|
|
{
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
|
|||
|
|
using (IDbConnection connection = dbFactory.CreateDbConnection())
|
|||
|
|
{
|
|||
|
|
PrepareCommand(dbFactory, cmd, connection, null, cmdType, cmdText, null);
|
|||
|
|
object val = cmd.ExecuteScalar();
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
return val;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
/// <summary>
|
|||
|
|
///依靠数据库连接字符串connectionString,
|
|||
|
|
/// 使用所提供参数，执行返回首行首列命令
|
|||
|
|
/// </summary>
|
|||
|
|
/// <remarks>
|
|||
|
|
/// e.g.:
|
|||
|
|
/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
|
|||
|
|
/// </remarks>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="connection">数据库连接对象</param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
|
|||
|
|
/// <param name="commandParameters">执行命令所需的参数数组</param>
|
|||
|
|
/// <returns>返回一个对象，使用Convert.To{Type}将该对象转换成想要的数据类型。</returns>
|
|||
|
|
public static object ExecuteScalar(DbFactory dbFactory, IDbConnection connection, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
|
|||
|
|
{
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
|
|||
|
|
PrepareCommand(dbFactory, cmd, connection, null, cmdType, cmdText, commandParameters);
|
|||
|
|
object val = cmd.ExecuteScalar();
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
return val;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
///依靠数据库连接字符串connectionString,
|
|||
|
|
/// 使用所提供参数，执行返回首行首列命令
|
|||
|
|
/// </summary>
|
|||
|
|
/// <remarks>
|
|||
|
|
/// e.g.:
|
|||
|
|
/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
|
|||
|
|
/// </remarks>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="connection">数据库连接对象</param>
|
|||
|
|
/// <param name="transaction"></param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
|
|||
|
|
/// <param name="commandParameters">执行命令所需的参数数组</param>
|
|||
|
|
/// <returns>返回一个对象，使用Convert.To{Type}将该对象转换成想要的数据类型。</returns>
|
|||
|
|
public static object ExecuteScalar(DbFactory dbFactory, IDbConnection connection, IDbTransaction transaction, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
|
|||
|
|
{
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
|
|||
|
|
PrepareCommand(dbFactory, cmd, connection, transaction, cmdType, cmdText, commandParameters);
|
|||
|
|
object val = cmd.ExecuteScalar();
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
return val;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
///依靠数据库连接字符串connectionString,
|
|||
|
|
/// 使用所提供参数，执行返回首行首列命令
|
|||
|
|
/// </summary>
|
|||
|
|
/// <remarks>
|
|||
|
|
/// e.g.:
|
|||
|
|
/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
|
|||
|
|
/// </remarks>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="connection">数据库连接对象</param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
|
|||
|
|
/// <returns>返回一个对象，使用Convert.To{Type}将该对象转换成想要的数据类型。</returns>
|
|||
|
|
public static object ExecuteScalar(DbFactory dbFactory, IDbConnection connection, CommandType cmdType, string cmdText)
|
|||
|
|
{
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
|
|||
|
|
PrepareCommand(dbFactory, cmd, connection, null, cmdType, cmdText, null);
|
|||
|
|
object val = cmd.ExecuteScalar();
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
return val;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
///依靠数据库连接字符串connectionString,
|
|||
|
|
/// 使用所提供参数，执行返回首行首列命令
|
|||
|
|
/// </summary>
|
|||
|
|
/// <remarks>
|
|||
|
|
/// e.g.:
|
|||
|
|
/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
|
|||
|
|
/// </remarks>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="conn">数据库连接对象</param>
|
|||
|
|
/// <param name="trans"></param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
|
|||
|
|
/// <returns>返回一个对象，使用Convert.To{Type}将该对象转换成想要的数据类型。</returns>
|
|||
|
|
public static object ExecuteScalar(DbFactory dbFactory, IDbConnection conn, IDbTransaction trans, CommandType cmdType, string cmdText)
|
|||
|
|
{
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
|
|||
|
|
PrepareCommand(dbFactory, cmd, conn, trans, cmdType, cmdText, null);
|
|||
|
|
object val = cmd.ExecuteScalar();
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
return val;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
///依靠数据库连接字符串connectionString,
|
|||
|
|
/// 使用所提供参数，执行返回首行首列命令
|
|||
|
|
/// </summary>
|
|||
|
|
/// <remarks>
|
|||
|
|
/// e.g.:
|
|||
|
|
/// Object obj = ExecuteScalar(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24));
|
|||
|
|
/// </remarks>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="trans">数据库事物对象</param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行</param>
|
|||
|
|
/// <param name="commandParameters">执行命令所需的参数数组</param>
|
|||
|
|
/// <returns>返回一个对象，使用Convert.To{Type}将该对象转换成想要的数据类型。</returns>
|
|||
|
|
public static object ExecuteScalar(DbFactory dbFactory, IDbTransaction trans, CommandType cmdType, string cmdText, params IDbDataParameter[] commandParameters)
|
|||
|
|
{
|
|||
|
|
IDbCommand cmd = dbFactory.CreateDbCommand();
|
|||
|
|
|
|||
|
|
PrepareCommand(dbFactory, cmd, trans.Connection, trans, cmdType, cmdText, commandParameters);
|
|||
|
|
object val = cmd.ExecuteScalar();
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
return val;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// add parameter array to the cache
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="cacheKey">Key to the parameter cache</param>
|
|||
|
|
/// <param name="commandParameters">an array of SqlParamters to be cached</param>
|
|||
|
|
public static void CacheParameters(string cacheKey, params IDbDataParameter[] commandParameters)
|
|||
|
|
{
|
|||
|
|
parmCache[cacheKey] = commandParameters;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// 查询缓存参数
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="cacheKey">使用缓存名称查找值</param>
|
|||
|
|
/// <returns>缓存参数数组</returns>
|
|||
|
|
public static IDbDataParameter[] GetCachedParameters(string cacheKey)
|
|||
|
|
{
|
|||
|
|
IDbDataParameter[] cachedParms = (IDbDataParameter[])parmCache[cacheKey];
|
|||
|
|
|
|||
|
|
if (cachedParms == null)
|
|||
|
|
return null;
|
|||
|
|
|
|||
|
|
IDbDataParameter[] clonedParms = new IDbDataParameter[cachedParms.Length];
|
|||
|
|
|
|||
|
|
for (int i = 0, j = cachedParms.Length; i < j; i++)
|
|||
|
|
clonedParms[i] = (IDbDataParameter)((ICloneable)cachedParms[i]).Clone();
|
|||
|
|
|
|||
|
|
return clonedParms;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// 为即将执行准备一个命令
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="dbFactory">数据库配置对象</param>
|
|||
|
|
/// <param name="cmd">SqlCommand对象</param>
|
|||
|
|
/// <param name="conn">SqlConnection对象</param>
|
|||
|
|
/// <param name="trans">IDbTransaction对象</param>
|
|||
|
|
/// <param name="cmdType">执行命令的类型（存储过程或T-SQL，等等）</param>
|
|||
|
|
/// <param name="cmdText">存储过程名称或者T-SQL命令行, e.g. Select * from Products</param>
|
|||
|
|
/// <param name="cmdParms">SqlParameters to use in the command</param>
|
|||
|
|
private static void PrepareCommand(DbFactory dbFactory, IDbCommand cmd, IDbConnection conn, IDbTransaction trans, CommandType cmdType, string cmdText, IDbDataParameter[] cmdParms)
|
|||
|
|
{
|
|||
|
|
if (conn.State != ConnectionState.Open)
|
|||
|
|
conn.Open();
|
|||
|
|
|
|||
|
|
cmd.Connection = conn;
|
|||
|
|
cmd.CommandText = cmdText;
|
|||
|
|
|
|||
|
|
if (trans != null)
|
|||
|
|
cmd.Transaction = trans;
|
|||
|
|
|
|||
|
|
cmd.CommandType = cmdType;
|
|||
|
|
|
|||
|
|
if (cmdParms != null)
|
|||
|
|
{
|
|||
|
|
foreach (IDbDataParameter parm in cmdParms)
|
|||
|
|
{
|
|||
|
|
if (dbFactory.DbType == DatabaseType.ACCESS && parm.DbType == System.Data.DbType.DateTime)
|
|||
|
|
{
|
|||
|
|
parm.DbType = System.Data.DbType.Object;
|
|||
|
|
}
|
|||
|
|
cmd.Parameters.Add(parm);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// 根据传入的Key获取配置文件中
|
|||
|
|
/// 相应Key的数据库连接字符串
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="Key"></param>
|
|||
|
|
/// <returns></returns>
|
|||
|
|
public static string GetConnectionString(string Key)
|
|||
|
|
{
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
string connectionString = CommonUtils.GetConfigValueByKey(Key);
|
|||
|
|
return connectionString;
|
|||
|
|
}
|
|||
|
|
catch
|
|||
|
|
{
|
|||
|
|
throw new Exception("web.config文件appSettings中数据库连接字符串未配置或配置错误，必须为Key=\"connectionString\"");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// 用于数据库类型的字符串枚举转换
|
|||
|
|
/// </summary>
|
|||
|
|
/// <typeparam name="T"></typeparam>
|
|||
|
|
/// <param name="value"></param>
|
|||
|
|
/// <returns></returns>
|
|||
|
|
public static T DatabaseTypeEnumParse<T>(string value)
|
|||
|
|
{
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
return CommonUtils.EnumParse<T>(value);
|
|||
|
|
}
|
|||
|
|
catch
|
|||
|
|
{
|
|||
|
|
throw new Exception("数据库类型\"" + value + "\"错误，请检查！");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|