您好peiyangzhang，

Hi peiyangzhang,

根据您的描述，您的问题不清楚.您能否提供有关它的更多信息?它是通用Windows平台(UWP)应用吗?

Based on your description, your question is not clear. Could you provide more information about it? Is it an Universal Windows Platform (UWP) app?

>> "

>> "How can I let the object rebound from the border otherthan fly out the screen?"

如果要反弹控件的某些属性，可以使用SetBinding方法.以下代码供您参考，并重置其DataContext属性.

If you want to rebound some properties of your controls, you could use SetBinding method. Code below is for your reference and reset its DataContext property.

button1.SetBinding(Button.ContentProperty, new Binding(path));
button1.DataContext = objContext;

***的问候，
王丽

Best Regards,
Li Wang