将控制器工厂添加到ASP MVC

using System;
using System.Web.Mvc;

public class CustomControllerFactory : IControllerFactory
{
    public IController CreateController(RequestContext requestContext, string controllerName)
    {
        Type controllerType = Type.GetType(controllerName + "Controller");
        if (controllerType != null)
        {
            return Activator.CreateInstance(controllerType) as IController;
        }
        return null;
    }

    public SessionStateBehavior GetControllerSessionBehavior(RequestContext requestContext, string controllerName)
    {
        return SessionStateBehavior.Default;
    }

    public void ReleaseController(IController controller)
    {
        IDisposable disposable = controller as IDisposable;
        if (disposable != null)
        {
            disposable.Dispose();
        }
    }
}

protected void Application_Start()
{
    AreaRegistration.RegisterAllAreas();
    FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
    RouteConfig.RegisterRoutes(RouteTable.Routes);
    BundleConfig.RegisterBundles(BundleTable.Bundles);

    ControllerBuilder.Current.SetControllerFactory(new CustomControllerFactory());
}