GridViewFilter, can't implment.

[Alessandro]

I'm needing to implement a GridViewFilter. However, when I add the following to my Xaml file:

    xmlns:telerikGridViewFilter="clr-namespace:Telerik.Windows.Controls.GridView.Filter"  

I get the following error.

Error   8   Undefined CLR namespace. The 'clr-namespace' URI refers to a namespace 'Telerik.Windows.Controls.GridView.Filter' that is not included in the assembly. 

Which assembly do I need to include in my project. I can't find the one implied by the Xaml entry.

Thanks!
 -- xavier

[Alessandro]

Got it working. Please ignore this post. Thanks !

[Pete]

How did you get this working.  I have the same issue.
Thanks