您可以参考以下链接来处理相机方向。

http://www.mindscapehq.com/blog/index.php/2012/02/ 28 / windows-phone-7-working-with-camera-tasks /

如果这没有用，那么你可以根据自己的要求编写自己的代码。以下链接应该可以帮助您入门。

http://msdn.microsoft.com/en-us/library/windowsphone/develop/hh202956(v = vs.105）.aspx

I want to use only frontface camera and camera must not  rotate.

Can u share with me any example code ?

Beray Benteşen

You can refer following link to handle Camera orientation.

http://www.mindscapehq.com/blog/index.php/2012/02/28/windows-phone-7-working-with-camera-tasks/

If this doesn't help then you can write your own code as per your requirement. Following link should help you get started.

http://msdn.microsoft.com/en-us/library/windowsphone/develop/hh202956(v=vs.105).aspx