In WinRT C# how do I save an offscreen XAML tree using RenderTargetBitmap?

Question

The following code throws a cryptic System.ArgumentException from the RenderAsync method \"Value does not fall within the expected range.\" If on the other hand my Canvas is

Answer 1

WinRTXamlToolkit.Composition namespace has this extension that works. Just call this method:

await WriteableBitmapRenderExtensions.RenderToPngStream(element);