I just added System.Windows.Interactivity assembly. XamlParse throw me an exception on run time:

Could not load file or assembly 'System.Windows.Interactivity, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

Google search found only results related to prism - which I do not use.

Any idea why does it happen?

c# .net wpf xaml exception
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