How to detect front and back camera in window tablet in winforms c#

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C#

camera

I'm using aforge in winforms for video recording. I wanna to record video both (front and back camera) in window tablet. I have able to find list of Video Capture Device but not identify which is front or rear camera.

I have sawed you my finding video capture device snippet of code.

Name space whose i use and some part of code..

using AForge.Video;
using AForge.Video.DirectShow;

 public VideoCaptureDevice cam = null;
        public FilterInfoCollection usbCams;

 usbCams = new FilterInfoCollection(FilterCategory.VideoInputDevice);

                 if (usbCams.Count == 1)
                {
                    cam = new VideoCaptureDevice(usbCams[0].MonikerString);
                }
                else if (usbCams.Count == 2)
                {
                    cam = new VideoCaptureDevice(usbCams[1].MonikerString);
                }

cam.NewFrame += new NewFrameEventHandler(cam_NewFrame);

 cam.Start();

private void cam_NewFrame(object sender, NewFrameEventArgs eventArgs)
        {
            Bitmap bitmap = (Bitmap)eventArgs.Frame.Clone();
            ImgContainer.Image = bitmap;



        }

I have tested in different devices like iball and lenovo yoga 8. I have found one reason is that in Iball tablet return first front camera name and second rear camera but in lenovo tablet return first rear camera and second front camera. I have total confused. How to identify front and rear camera ?

What I have tried:

I have tried above code but not success to find front and rear camera.