The name “Interaction” does not exist in the namespace “http://schemas.microsoft.com/expression/2010/interactivity”

Question

I\'ve used the System.Windows.Interactivity DLL in several projects without any problem. Now in my latest project I can\'t get it to work. I always get the following error:

Answer 1

I had the same problem. What I did was:

1. Remove Microsoft.Expression.Interactions and System.Windows.Interactivity from the project in Visual Studio while keeping the xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" namespace.
2. Open the same project in Blend.
3. Add the correct .net versions of Microsoft.Expression.Interactions and System.Windows.Interactivity back in Blend (in my case it was 4.5).