How to change the capture resolution of CaptureDevice and toggle between front and rear camera

Hi. I'm using Visual Studio 2013, and the Windows Phone App template. I'm using the Microsoft.Devices / CaptureVideo API to capture video. I now want to set the resolution to capture the video in a specific(available) resolution. How do I do that?
Code snippet reference to API:
CaptureVideo vcDevice = CaptureDeviceConfiguration.GetDefaultVideoCaptureDevice();
and I also want to put a button there to toggle between front and rear camera. If I click the button, and the rear camera is currently active, the front camera must become active and vice versa. How do I do that with this API?
Thank you.

visit this page to know how.
http://stackoverflow.com/questions/25466088/how-to-switch-to-front-camera-in-windows-phone-8-1-winrt-jupiter

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How to change the capture resolution of CaptureDevice and toggle between front and rear camera

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