public void readGroupSchedule(DateTime?start, DateTime?end) { ScheduleDAL scheduleDAL = new ScheduleDAL(); scheduleDAL.userId = this.userId; scheduleDAL.scheduleId = this.scheduleId; scheduleDAL.freeSlot = this.freeSlot; scheduleDAL.freeSlotTimeFrom = this.freeSlotTimeFrom; scheduleDAL.freeSlotTimeTo = this.freeSlotTimeTo; scheduleList = scheduleDAL.readSchedule(this.groupId, start, end); }