/// <summary>
        /// 更新价格最大值
        /// </summary>
        /// <returns></returns>
        public bool UpdatePraiceMax(double paramValue)
        {
            bool RetrunValue = false;

            SQL = "UPDATE [PriceMax]  SET  [MaxPrice] =" + paramValue + "  WHERE  1=1 ";
            int row = mySqlconn.ExecuteSqlRow(SQL);

            if (row > 0)
            {
                RetrunValue = true;
            }
            return(RetrunValue);
        }