How to use KeyDown event in CanvasControl?

[HASPzhu]

I want to use KeyDown event and it did't work.
I checked it with Microsoft.UI.Xaml.Input.FocusManager.GetFocusedElement(ContentArea.XamlRoot).GetType().Name. It is ScrollViewer when I click on CanvasControl area. /ContentArea is a grid in page/
what shall I do to resolve it?

[castorix]

A way to read input with focus on any control is with Hooks
You can see this thread where I had posted a test sample : Gathering keyboard input doesn't work (winui 3) #7330

[nikolayvpavlov]

Set the Backgound of the canvas to Transparent:
Background="Transparent"