public void AddResevation(Reservation reservation)
 {
     using (AutoReservationEntities context = new AutoReservationEntities())
     {
         context.AddToReservationen(reservation);
         context.SaveChanges();
     }
 }
 public void CreateReservation(Reservation created)
 {
     using (var ctx = new AutoReservationEntities())
     {
         ctx.AddToReservationen(created);
         ctx.SaveChanges();
     }
 }