WinRT XAML does not support behaviors out of the box. This project tries to fill the gap for people who really need behaviors to get cracking in XAML for Windows 8 apps.
The work in this project is primarily based on
this article, although things have moved on from there: the latest version supports data binding and the memory leak has been plugged with the help of my initial two co-developers: Geert van Horrik and
Filip Skakun. On September 17 2012 András Velvárt joined to add a simple form of Blend Support
(NuGet package v1.0.2)
The process of porting behaviors from Windows Phone 7 to WinRt can be see in action
in this blogpost
Note: on August 17 2012 changeset 18697 fixed an important bug that potentially hangs your application on startup, navigating to a new page or displaying a control previously not shown or loaded.
As of August 18 2012 WinRtBehaviors is also available as a