public ReservationForm(int id_movieShowTime)
 {
     InitializeComponent();
     _reservationFormService = new ReservationFormService();
     _showTimeRepository     = new ShowTimeRepository();
     MovieShowTime           = _showTimeRepository.GetShowTime(id_movieShowTime);
 }
        private List <string> GetAvaiableChairs(int id_MovieShowtime)
        {
            var showTime    = _showTimeRepository.GetShowTime(id_MovieShowtime);
            var theaterRoom = _theaterRoomsRepository.GetTheaterRoom(showTime.Id_TheaterRoom);

            var chairsNotTaken = theaterRoom.AllChairs.Where(x => !showTime.TakenChairs.Contains(x)).ToList();

            return(chairsNotTaken);
        }