Winform中GridView分组排序功能实现方法

            }
            return o;
        }

        #endregion

        #region 查询获取DataReader------------------------------------

        /// <summary>
        /// 调用不带参数的存储过程，返回DataReader对象
        /// </summary>
        /// <param name="procName">存储过程名称</param>
        /// <returns>DataReader对象</returns>
        public static SqlDataReader GetReaderByProc(string procName)
        {
            return GetReaderByProc(procName, null);
        }
        /// <summary>
        /// 调用带有参数的存储过程，返回DataReader对象
        /// </summary>
        /// <param name="procName">存储过程名</param>
        /// <param name="paras">参数数组</param>
        /// <returns>DataReader对象</returns>
        public static SqlDataReader GetReaderByProc(string procName, SqlParameter[] paras)
        {
            return GetReader(procName, paras, CommandType.StoredProcedure);
        }
        /// <summary>
        /// 根据sql语句返回DataReader对象
        /// </summary>
        /// <param name="strSQL">sql语句</param>
        /// <returns>DataReader对象</returns>
        public static SqlDataReader GetReader(string strSQL)
        {
            return GetReader(strSQL, null);