These technologies are very different. Webforms and Metro do not mix at all, although the CSS, Javascript and pure HTML will transfer over with no issues. The code-behind pages will not transfer much at all, since Metro used WinRT and a subset
of .NET, while ASP.NET is it's own creature relying on the full power of .NET. Furthermore, there's currently no DB support in Metro, so you'll be forced to use application storage.
There's not much to tell you other than try it out, see what works and what breaks. You can post here if you're stumped by something.
Matt Small - Microsoft Escalation Engineer - Forum Moderator
