I need an UrlHelper in my webapi vNext controller, so I am trying to get it injected using the constructor:

public BaseApiController(UrlHelper urlHelper)

In my Startup.cs I've added:

services.AddTransient<UrlHelper, UrlHelper>();

But when I run it, it errors because it can't resolve the ActionContext parameter to instantiate the UrlHelper. So I added:

services.AddTransient<ActionContext, ActionContext>();

But then I get the error:

A circular dependency was detected for the service of type

Any suggestions?

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