How to configure Web Api 2 to look for Controllers in a separate project? (just like I used to do in Web Api)

Question

I used to place my controllers into a separate Class Library project in Mvc Web Api. I used to add the following line in my web api project\'s global.asax to look for contro

Answer 1

Apart from what has been said already:

Make sure you don't have two controllers of the same name in different namespaces.

Just had the case where one controller (foo.UserApiController) should be partially migrated to a new namespace (bar.UserApiController) and URI. The old controller was mapped by convention to /userapi, the new one was attribute-routed via RoutePrefix["api/users"]. The new controller didn't work until I renamed it to bar.UserFooApiController.