public int Delete_Timetables(int id)
 {
     TimetablesBAL timetablesBal = new TimetablesBAL();
     return timetablesBal.Delete_TimetablesBAL(id);
 }
 public int Add_Timetables(Timetable t)
 {
     TimetablesBAL timetablesBal = new TimetablesBAL();
     return timetablesBal.Add_TimetablesBAL(t);
 }
 public get_Timetable_By_ID_Result get_Timetable_By_ID(int id)
 {
     TimetablesBAL timetablesBal = new TimetablesBAL();
     return timetablesBal.get_Timetable_By_IDBAL(id);
 }
 public IEnumerable<getAll_Timetables_Result> GetAll_Timetables()
 {
     TimetablesBAL timetablesBal = new TimetablesBAL();
     return timetablesBal.GetAll_TimetablesBAL();
 }
 public int Update_Timetables(Timetable t)
 {
     TimetablesBAL timetablesBal = new TimetablesBAL();
     return timetablesBal.Update_TimetablesBAL(t);
 }