private void _timer_Elapsed(object sender) { string time = ConfigurationManager.AppSettings["ClearHistoryTime"]; int hour = Convert.ToInt32(time); int now = DateTime.Now.Hour; if (now >= hour) { TIcketDAOMSSQL t = new TIcketDAOMSSQL(); FlightDAOMSSQL f = new FlightDAOMSSQL(); t.MoveToTicketHistory(); f.MoveToFlightsHistory(); } }