MVC WebApi not using AutofacWebApiDependencyResolver

Question

I have a mixed MVC 4 app, where some controllers are regular implementations of Controller and some controllers are implementations of ApiController.

Answer 1

To setup Autofac for Web.API you need to do two things:

1. Register the Autofac dependency resolver (in the App_Start):

   GlobalConfiguration.Configuration.DependencyResolver = 
       new AutofacWebApiDependencyResolver(container);
   

2. And register your Api controllers in your container builder with the call:

   containerBuilder.RegisterApiControllers(Assembly.GetExecutingAssembly());
   

Answer 2

Probably this blog can help you: http://blogs.msdn.com/b/roncain/archive/2012/07/16/dependency-injection-with-asp-net-web-api-and-autofac.aspx