private void StopPreview() { _preview?.Dispose(); _preview = null; StartButton.IsEnabled = true; }
private void StartPreview(GraphicsCaptureItem item) { var compositor = Window.Current.Compositor; _preview?.Dispose(); _preview = new CapturePreview(_device, item); var surface = _preview.CreateSurface(compositor); _previewBrush.Surface = surface; _preview.StartCapture(); StartButton.IsEnabled = false; }