Installing multiple versions of the same ClickOnce application

While researching Side-by-side (SxS) assemblies and ClickOnce I found this article by Brian Noyes that addresses the problem with attempting to install two versions of a ClickOnce application.



http://briannoyes.net/CommentView,guid,fe63caf8-a84e-4cb4-a784-703835ac327e.aspx





Essentially he says that the Application Identity is the actual discriminator that allows two versions of the same ClickOnce application to be installed on the same machine. Visual Studio set's the application id when publishing, but you can use the mageui.exe, or some other manifest manager tool, to change the application id.