// logic for delete guest button. Removes the guest from the current object and from the database
private void btnDelGuest_Click(object sender, RoutedEventArgs e)
{
if (listBoxGuests.SelectedIndex == -1)
{
return;
}
booking.GuestList.Remove(selectedGuest);
DataLayerFacade.DeleteGuest(selectedGuest.PassportNumber);
listBoxGuests.SelectedIndex = -1;
listBoxGuests.Items.Remove(selectedGuest.Name);
MessageBox.Show("Guest has been deleted.");
btnDelGuest.IsEnabled = false;
btnAmendGuest.IsEnabled = false;
btnAmendGuestSave.Visibility = Visibility.Hidden;
txtBoxEditAge.Visibility = Visibility.Hidden;
txtBoxEditName.Visibility = Visibility.Hidden;
txtBoxEditPassp.Visibility = Visibility.Hidden;
}
