如果您不断点击该按钮，可能需要在代码中加入检查以防止重入。例如，在Click事件中，检查您的应用是否已在刷新图像的过程中。如果忙碌，可能会忽略点击。

If you are continuously clicking the button you might want to put checks in your code to prevent reentrance. For example in your Click event check to see if your app is already in the process of refreshing an image. Perhaps ignore the click if it is busy.

希望这会有所帮助，

Mark

Hope this helps,
Mark