static void OnSourceChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
CachedImageCtrl img = (CachedImageCtrl)obj;
img.imgImage.Source = (BitmapSource)args.NewValue;
}
static void OnColorChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
CachedImageCtrl img = (CachedImageCtrl)obj;
img.Fill((PictureInfoDTO)args.NewValue);
}