Toggle flashlight in Windows Phone 8.1

Question

Can anyone say how to toggle flashlight in Windows Phone 8.1 using C#? It seems like there are lots of API changes in Windows Phone 8.1 and most of the API\'s in WP 8.0 are

Answer 1

In my Lumia 1520. I need to start video recording and start preview to get flashlight working:

await captureManager.StartPreviewAsync();