Where do I find System.Windows.Interactivity as redistributable?

I tried downloading Blend 3 but even with that installed I can't find the file under .NET. If I try to add a reference from C:\Program Files (x86)\Microsoft SDKs\Expression\Blend 3\Interactivity\Libraries\WPF and use this code http://pastebin.com/VdeRyPdv I get an error that the file was not f开发者_高级运维ound. It also adds a lot of folders like en, de es fr etc to my debug folder.

The Expression Blend SDK for .NET 4 (WPF) is available here.

The mvvm light toolkit includes a standalone version of this assembly

Maybe in the Blend 3 SDK?

You can take the WPF version from Nuget.