问题
I was wondering, if it is somehow possible to add a TextBox in the Application Bar area (the same way the Internet Explorer does), but I didn't find any information source about this. Have you any idea, how to accomplish this task?
回答1:
You will not be able to add UIElements inside ApplicationBar as it is not derived from UIElement.
Alternatively, you can try adding a Grid at the bottom of the screen and color it similar to the ApplicationBar. Then add a TextBlock inside the Grid. This is just a workaround and not recommended as it is not according to the standards.
You can also check the following link: http://www.maxpaulousky.com/blog/archive/2011/01/10/bindable-application-bar-extensions-for-windows-phone-7.aspx
来源：https://stackoverflow.com/questions/8975315/windows-phone-application-bar-textbox