// 判斷該天是否已經有考勤紀錄
        private Boolean JudgeWAExist()
        {
            WorkAttendanceModel waModel = new WorkAttendanceModel();

            waModel.SetWAEmplID(this._workAttendanceModel.GetWAEmplID());
            waModel.SetWADate(this._workAttendanceModel.GetWADate());

            this._waService = new WorkAttendanceService(waModel);

            waModel = this._waService.SearchWAByEmplIDAndDate();

            String waStatus = waModel.GetWAStatus();
            if (waStatus != null)
                return true;

            return false;
        }