How to use StructureMap to inject repository classes to the controller?

In the current application I am working on I have a custom ControllerFactory class that create a controller and automatically sets the Elmah ErrorHandler.

public class BaseControllerFactory : DefaultControllerFactory
{
    public override IController CreateController( RequestContext requestContext, string controllerName ) {
        var controller = base.开发者_Go百科CreateController( requestContext, controllerName );
        var c = controller as Controller;
        if ( c != null ) {
            c.ActionInvoker = new ErrorHandlingActionInvoker( new HandleErrorWithElmahAttribute() );
        }
        return controller;
    }

    protected override IController GetControllerInstance( RequestContext requestContext, Type controllerType ) {
        try {
            if ( ( requestContext == null ) || ( controllerType == null ) )
                return base.GetControllerInstance( requestContext, controllerType );

            return (Controller)ObjectFactory.GetInstance( controllerType );
        }
        catch ( StructureMapException ) {
            System.Diagnostics.Debug.WriteLine( ObjectFactory.WhatDoIHave() );
            throw new Exception( ObjectFactory.WhatDoIHave() );
        }
    }
}

I would like to use StructureMap to inject some code in my controllers. For example I would like to automatically inject repository classes in them.

I have already created my repository classes and also I have added a constructor to the controller that receive the repository class

public FirmController( IContactRepository contactRepository ) {
    _contactRepository = contactRepository;
}

I have then registered the type within StructureMap

ObjectFactory.Initialize( x => {
    x.For<IContactRepository>().Use<MyContactRepository>();
});

How should I change the code in the CreateController method to have the IContactRepository concrete class injected in the FirmController?

EDIT:

I have changed the BaseControllerFactory to use Structuremap. But I get an exception on the line

return (Controller)ObjectFactory.GetInstance( controllerType );

Any hint?

Before typing in the solution, I would recommend using the Container type to initialize SM rather than ObjectFactory

The best way to accomplish this would be to have a class subclassed from the Registry class in StructureMap framework. so, my Registry would be something like

public class MyAppRegistry : Registry
{
     public MyAppRegistry()
     {
        For<IContactRepository>().Use<MyContactRepository>();
     }
}

and then tell SM to use this Registry during configuration.

var container = new Container(x=>x.AddRegistry(new MyAppRegistry());

this would be done from the Application_Start in the Global.asax. After the above line, set the ControllerBuilder in mvc to use the BaseControllerFactory. Now SM should be able to resolve all dependencies