public bool QueryIsHoliday(HolidayManager hgr, DateTime t1)
        {
            string today = t1.ToString("yyyyMMdd");
            //string status = null;
            HOLIDAY holiday = hgr.Query("SELECT * FROM HOLIDAY WHERE TO_CHAR(DAY,'yyyyMMdd') = " + today + "").FirstOrDefault();

            if (holiday != null && (!"0".Equals(holiday.STATUS)))
            {
                return(true); // 非工作日
            }
            else
            {
                return(false); // 工作日
            }
        }