Hi There,

The Customer where I'm currently working at asked me if i could build him a Silverlight 2 app. I've been playing around with Silverilght quite a bit but i haven't really used any design patterns so i came to the idea to search the web if there are any specific Silverlight design patterns.

The only really big pattern i found was the MVVM Model View Viewmodel pattern. This isn't a completly new design pattern (Martin fowler calls it the Presentation Model Pattern)

If you know the MVC pattern which you probably do know this is somewhat alike. The model is your layer which connects to the data and the view is ofcourse xaml based in silverlight. So what does the ViewModel do? The viemodel is used to build specific models for each view in your silverlight app so you can have full advantage of the strong databinding in Silverlight.

There are quite some resources about this pattern which i'll link down here:

• MVVM Webcast
• http://blogs.conchango.com/davidwynne/archive/2008/12/15/silverlight-and-the-view-viewmodel-pattern.aspx
• http://joshsmithonwpf.wordpress.com/2009/02/25/two-model-view-viewmodel-screencasts/
• http://msdn.microsoft.com/en-us/magazine/dd458800.aspx
• http://davidburela.wordpress.com/2008/10/19/silverlight-mvvm-dependency-injection/
• http://jonas.follesoe.no/YouCardRevisitedImplementingTheViewModelPattern.aspx

I'll be using this pattern at my current assignment and afterwards i'll blog about the results :)

Geert van der Cruijsen