WinUIEx1001.md

WinUIEX1001: The member will always be null.

The member will always be null and should not be used. This API was there due to UWP API surface area requirements, but is not needed for WinUI, and thus was never implemented.

Item	Value
Category	Usage
Enabled	True
Severity	Warning
CodeFix	False

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One example is Window.Current: WinUI 3 does not have the notion of a current window. If you're interested in getting a reference to you main window, you could add a property to your App class that returns the main window, and set that property when you create the window.

References

• Windows Runtime APIs not supported in desktop apps
• Window.Current is null
• Deprecate and hide from Intellisense APIs that always return null, like Window.Current