EDIT
The simple question is, how can I get Thread.CurrentPrincipal.Identity.Name to have the current user logon in WPF?
END EDIT
I'm trying to call an existing method (not in any sort of service; just a method in a POCO) that retrieves the current user with:
Thread.CurrentPrincipal.Identity.Name
This code was written by someone else, and (presumably) works with his ASP.NET MVC project. I'm trying to call this same method from WPF, and Name is now blank.
Is there anything I can do about this?