How to cancel user input on textbox input fields?

[jschwizer99]

My users would like to cancel user input by pressing Esc. They expect that already entered text is reverted if not yet committed by Enter or Tab.
The textbox offers an Undo() method that will restore the last value of the undo/redo stack. However, this is not the functionality I expect for cancel as if the user did not enter any value before Esc a prior value is restored. Furthermore, clearing the undo/redo stack isn't a good idea either.
I couldn't find any documentation of input canceling on the WinUI / UWP documentation pages.

Based on https://stackoverflow.com/questions/24251356/how-to-make-textbox-lose-its-focus I use the following quite 'hacky' approach triggered on the PreviewKeyDown event.

if (args.Key() == winrt::Windows::System::VirtualKey::Escape)
{
	// ESC -> cancel edit (do reset not yet committed data), exit edit focus
	const auto element = sender.try_as<winrt::Microsoft::UI::Xaml::Controls::TextBox>();
	if (element)
	{
		const auto data = element.DataContext().try_as<MyValue>();
		if (data)
		{
			element.Text(MyValue);
		}
		bool restoreEnable = element.IsEnabled();
		bool restoreTabStop = element.IsTabStop();
		element.IsEnabled(false);
		element.IsTabStop(false);
		element.IsTabStop(restoreTabStop);
		element.IsEnabled(restoreEnable);
		args.Handled(true);
	}
}

Is there a better and more generic approach to achieving input canceling? Of course, a method like Cancel() would be the ideal case. Needless to say that the functionality is not restricted to textbox only.

Are there any plans to offer user input canceling with WinUI input validation?