Wie kann ich WriteableBitmap in BitmapImage konvertieren?

BitmapImage bitmapImage = new BitmapImage(new Uri("arka_projects_as_logo.png", UriKind.Relative)); Image uiElement = new Image() { Source = bitmapImage }; ScaleTransform t = new ScaleTransform() { ScaleX = 0.2, ScaleY = 0.2 }; WriteableBitmap ...