【WPF】Button按钮动态设置Background背景颜色

如果想给按钮背景设置为一张图片：

Button btn = new Button();
ImageBrush brush = new ImageBrush();
brush.ImageSource = new BitmapImage(new Uri("Images/test.png", UriKind.Relative));
btn.Background = brush;

Background = System.Windows.Media.Brushes.White，