How does one define IOleServiceProvider in a WPF application?

[complete]

How does one define IOleServiceProvider in a C# WPF application?
I was told that it was automatically recogized if I downloaded and installed the visual studio SDK. Is there some extra step I am missing?
http://i67.photobucket.com/albums/h292/Athono/programming/12-9-2012.png
IOleServiceProvider is from the Namespace Microsoft.TeamFoundation...
But I cannot declare this:
http://i67.photobucket.com/albums/h292/Athono/programming/12-9-2012-2.png

 

[jmcilhinney]

Here's the relevant MSDN documentation:

SafeWebBrowser.IOleServiceProvider Interface (Microsoft.TeamFoundation.WorkItemTracking.Controls)

As it says there, that interface is declared in the Microsoft.TeamFoundation.WorkItemTracking.Controls.dll assembly. Have you referenced that assembly? If not then you can't import the namespaces or use the types it contains. Also, that documentation shows that that interface is nested within the SafeWebBrowser class, so you would have to either import that class, rather than just its namespace, or else qualify the interface name with the class name.