ApexLumia.Camera.start C# (CSharp) Метод

        public void start()
        {
            cam.Initialized += new EventHandler<Microsoft.Devices.CameraOperationCompletedEventArgs>(camInitialized);
            cam.CaptureCompleted += new EventHandler<CameraOperationCompletedEventArgs>(camCaptureCompleted);
            cam.CaptureImageAvailable += new EventHandler<Microsoft.Devices.ContentReadyEventArgs>(camCaptureImageAvailable);
            cam.CaptureThumbnailAvailable += new EventHandler<ContentReadyEventArgs>(camCaptureThumbnailAvailable);
            cam.AutoFocusCompleted += new EventHandler<CameraOperationCompletedEventArgs>(camAutoFocusCompleted);
            videobrush.SetSource(cam);
            videobrush.RelativeTransform = new CompositeTransform() { CenterX = 0.5, CenterY = 0.5, Rotation = 90 };
            _isRunning = true;
        }

 protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
 {
     camera = new Camera(cameraViewBrush, 0);
     camera.start();
 }