Practical development tips for Windows Phone (14): Hide sip events in the input box

In Windows Phone, when the input box gets the focus, the soft Input Panel (SIP) is automatically displayed for the user to input. When we click the physical rollback key, the SIP will be automatically hidden. So what event is triggered? Where should we write code for other operations?

We can register the keyup event in the input box. When the input box obtains the focus and click the back button, the system does two things: hiding the SIP and losing the focus in the input box.

 

The running effect is as follows:

 

Source codeDownload: