What easing library should I use in c#?

Does anyone know if some sort of animation easin开发者_如何转开发g library like the tween libraries for Flash ActionScripting exist for c#. I've done some Google-searches but i've only found http://theinstructionlimit.com/flash-style-tweeneasing-functions-in-c and i'm looking for a more complete library. Is easing known by another name in c#-programming?

WPF / Silverlight is the way to create animations in the .NET stack.