private static void RestoreCardHandler(object sender, RoutedEventArgs e)
{
// Fix: This code is called during Loaded event and is useful if WPF
// detaches and then re-attaches the control, e.g. when we change Z-order
// by calling Move on an ObservableCollection.
/* if (_card == null)
{
_card = DataContext as Card;
if (_card != null) _card.PropertyChanged += PropertyChangeHandler;
}*/
}