Update a WPF Application

Hi

Is there no "normal" way, to Update a C#/WPF Application out of the Box? I'm not interested in ClickOnce (I don't want for every user different installations in the User-Appdata). The Programm should run for every user in c:\Program Files, and it should be possible, to run the Update manually in the WPF-App.

Do I really have to use one of the Code-Projects (like NetSparkle), or is there a way to run a Setup.exe made in Visual Studio which offers the Option "Update" if there is allready installed an older Version of the App?

Or can I abuse ClickOnce and install it for every User in a normal Path (C:\Program Files)?

Thanks for your Inputs.