The Model-View-ViewModel pattern has been gaining a lot of popularity for WPF, and there have been a growing number of posts and resources about adapting it for Silverlight.

This is a short summary post of some of those resources.  I will follow this up later with a detailed post on M-V-VM where I will also explore the business case for adopting such a design (design patterns are great but I am wary about adopting them for the sake of it like this)

• Nikhil Kothari’s description of the pattern written in June 08: http://www.nikhilk.net/Silverlight-ViewModel-Pattern.aspx 
• Mark Heath refactored his SilverNibbles game to M-V-VM in Nov 08: http://mark-dot-net.blogspot.com/2008/11/model-view-view-model-mvvm-in.html 
• Ryan Keeter created a M-V-VM Hello World example: http://www.ryankeeter.com/silverlight/silverlight-mvvm-pt-1-hello-world-style/ (also a screencast)
• Jonas added a detailed post on M-V-VM in Nov 08: http://jonas.follesoe.no/YouCardRevisitedImplementingTheViewModelPattern.aspx 
• David Wynne has a nice succinct example (Dec 08): http://blogs.conchango.com/davidwynne/archive/2008/12/15/silverlight-and-the-view-viewmodel-pattern.aspx 
• Composite WPF and Silverlight Guidance (aka Prism2) released on codeplex in Feb 08: http://www.codeplex.com/CompositeWPF
• Tim Heuer talked about by M-V-VM on getpixel8ed.com: http://pixel8.infragistics.com/default.aspx#Episode:11927 (code)
• Shawn Wildermuth’s MSDN article in March 09 kicked off a lot of tweets on this topic: Model-View-ViewModel In Silverlight 2 Apps (code)
• Kevin Rohlin has a nice post on MultiTargeting M-V-VM: An Exercise in reuse for Silverlight and WPF Applications

If you want to pick one to get started with I’d recommend the Tim Heuer’s screencast:

Cheers

Ian