private static void GridSizeChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
CardBoard cardBoard = sender as CardBoard;
cardBoard.Init();
cardBoard.Edit();
}
private static void OnCardsChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
CardBoard cardBoard = sender as CardBoard;
var cards = (IList <Card>)args.NewValue;
cardBoard.Update(cards);
cardBoard.Edit();
}