How to share the most code between a WPF and an ASP.NET MVC application?

Question

What architecture and patterns can I use to share the most model and logic code between a WPF and an ASP.NET MVC application?

I am trying to achieve a bit more here than

Answer 1

Did you try using Portable class libraries. With this you can make the data layer and use it in ASP.Net MVC, WPF, Windows Phone, Silverlight.