通过将一个层放置在图片并令其alpha通道值随定时器值增加，可实现图片的淡出效果。在此示例中，我应用两个图片框和3个按钮实现此效果。-By placing a layer above an image and letting its alpha value increase step by step with a timer, you can realise fade effects for any image or graphics object in C#. In this example,