private void LvSeat_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (lvSeat.SelectedIndex == -1)
{
return;
}
OrderControl.SetSeatIdx((lvSeat.SelectedItem as SeatItemCtrl).GetSeat().Idx);
OrderControl.Visibility = Visibility.Visible;
lvSeat.Visibility = Visibility.Hidden;
}
