怎么使用DbHelperSQL调用存储(转)

下面代码是个调用存储过程的例子，对于学习怎么使用DbHelperSQL调用存储过程很有帮助.

/// <summary>
        /// 获得数据集
        /// </summary>
        /// <param name="tblName">表名</param>
        /// <param name="RetColumns">需要返回的列，默认为全部 </param>
        /// <param name="Orderfld">排序字段名</param>
        /// <param name="PageSize">页尺寸</param>
        /// <param name="PageIndex">页码 </param>
        /// <param name="IsCount">返回记录总数, 非 0 值则返回 </param>
        /// <param name="OrderType">设置排序类型, 非 asc 值则降序 </param>
        /// <param name="strWhere">查询条件 (注意: 不要加 where) </param>
        /// <returns>数据集</returns>
        public static SqlDataReader Get_DataReader(string tblName,string RetColumns,string Orderfld,int PageSize,int PageIndex,int IsCount,string OrderType,string strWhere)
        {
            IDataParameter[] parameters = new SqlParameter[8];
            parameters[0]=new SqlParameter("@tblName", SqlDbType.NVarChar,255);//表名
            parameters[1]=new SqlParameter("@RetColumns", SqlDbType.NVarChar,1000);//需要返回的列，默认为全部
            parameters[2]=new SqlParameter("@Orderfld", SqlDbType.NVarChar,255);//排序字段名
            parameters[3]=new SqlParameter("@PageSize", SqlDbType.Int);//页尺寸
            parameters[4]=new SqlParameter("@PageIndex", SqlDbType.Int);//页码
            parameters[5]=new SqlParameter("@IsCount", SqlDbType.Bit);//返回记录总数, 非 0 值则返回
            parameters[6]=new SqlParameter("@OrderType", SqlDbType.NVarChar,50);//设置排序类型, 非 asc 值则降序
            parameters[7]=new SqlParameter("@strWhere", SqlDbType.NVarChar,1000);//查询条件 (注意: 不要加 where)

            parameters[0].Value=tblName;
            parameters[1].Value=RetColumns;
            parameters[2].Value=Orderfld;
            parameters[3].Value=PageSize;
            parameters[4].Value=PageIndex;
            parameters[5].Value=IsCount;
            parameters[6].Value=OrderType;
            parameters[7].Value=strWhere;
            try
            {
                return DbHelperSQL.RunProcedure("proc_y_GetRecordFromPage",parameters);
            }
            catch
            {
                return null;
            }
        }

/// <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>
        /// <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();               
            return returnReader;           
        }
/// <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;
            foreach (SqlParameter parameter in parameters)
            {
                command.Parameters.Add( parameter );
            }
            return command;           
        }