How to use my own dependency resolver in MVC4's APIController

Back in MVC3, I had a custom `ControllerFactory` which would use my own container (as abstracted by my business logic) to instantiate controllers and pass them services they needed. I'm trying to implement something similar in MVC4 using the new `ApiController`. I've got a static/shared method `Core.DependencyResolverFactory.Resolver` which returns an `IDependencyResolver`. This in turn has a number of `Resolve(...)` and `ResolveAll(...)` methods and overloads. So... How can I implement the same thing in MVC4? I've tried setting up my own ServiceLocator but can't find the interface `Microsoft.Practices.ServiceLocation.IServiceLocator` in any of the framework assemblies. I'm not too worried about being tied to an underlying container as it's already being abstracted by the BL, so really I just need a quick and dirty way to inject my classes into MVC's DI. Can someone please point me at a good tutorial? What I've got at the moment.... ``` Sub Application_Start() ...Snip... 'Suggested in the link on jrummel's answer... GlobalConfiguration.Configuration.DependencyResolver = New WebResolver 'It fails due to DependencyResolver not being defined 'I do have a GlobalConfiguration.Configuration.ServiceResolver = New WebResolver 'but it's read-only and it is of type System.Web.Http.Services.DependencyResolver not IDependencyResolver End Sub Private Class WebResolver Implements IDependencyResolver Private Resolver As Common.Interfaces.IDependencyResolver = Core.DependencyResolverFactory.QuickResolver Public Function GetService(serviceType As Type) As Object Implements IDependencyResolver.GetService Return Resolver.Resolve(serviceType) End Function Public Function GetServices(serviceType As Type) As IEnumerable(Of Object) Implements IDependencyResolver.GetServices Return Resolver.ResolveAll(serviceType) End Function End Class ```