public static void OniIndexChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
CanvasWithPhoto c = (CanvasWithPhoto)sender;
int newValue = (int)e.NewValue;
int oldValue = (int)e.OldValue;
c.Index = (int)e.NewValue;
c.OnIndexChanged(oldValue, newValue);
}
private void CanvasWithPhoto_IndexChanged(object sender, RoutedPropertyChangedEventArgs <int> e)
{
CanvasWithPhoto c = (CanvasWithPhoto)sender;
UpdataRadioBtn(c.Index);
}