private void saveBtnClicked(object sender, RoutedEventArgs e) { if (!ValidateFields()) { return; } Model.Reservation tempReservation = staffMenu.ObservableReservations[reservationList.SelectedIndex]; reservationList.SelectedIndex = -1; MyController.manageReservation.SaveReservation(tempReservation, tempReservation.ReservationId); staffMenu.updateReservationList(); reservationList.Items.Refresh(); }