private void ComboWebcams_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
{
var index = ComboWebcams.SelectedIndex;
if (index != -1)
{
WebCam.Stop();
var videoDevices = RadWebCam.GetVideoCaptureDevices();
var videoFormats = RadWebCam.GetVideoFormats(videoDevices[index]);
WebCam.Initialize(videoDevices[index], videoFormats[0]);
WebCam.Start();
}
}