Bug: Passing Microsoft.Graphics.Canvas.UI.Xaml.CanvasControl.Invalidate as the callback argument to a DispatcherQueue.TryEnqueue causes an InvalidCastException in the WinRT runtime

[HeCoding180]

Description

When trying to directly pass the Invalidate method of a Microsoft.Graphics.Canvas.UI.Xaml.CanvasControl instance as the callback argument of the TryEnqueue method of a DispatcherQueue instance an InvalidCastException is thrown.
When passing a lambda expression that just calls the Invalidate method, the exception is not thrown!

Steps To Reproduce

The following should do the trick (I have not verified this outside of my repo):

DispatcherQueue.TryEnqueue(GraphCanvas.Invalidate);

where GraphCanvas is a Microsoft.Graphics.Canvas.UI.Xaml.CanvasControl instance.
The following code does not throw the exception:

DispatcherQueue.TryEnqueue(() => GraphCanvas.Invalidate());

Expected Behavior

No InvalidCastException is thrown

Version Info

.NET 9.0 Framework

Additional Context

The following image shows one such exception with a stack trace:

[Sergio0694]

@manodasanW FYI I asked @HeCoding180 to open this for tracking, but I've already looked into it. The issue is here:

We're trying to unwrap the delegate, which succeeds because the target is CanvasControl, which is unwrappable. Then the QueryInterface fails because of course that's not a delegate type. I think we can leave this as is for CsWinRT 2.x, since nobody else ever hit this before, plus there's a workaround. This is fixed already in 3.0 because we won't unwrap in this case 🙂