public class MvcApplication : System.Web.HttpApplication
{
    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        BundleConfig.RegisterBundles(BundleTable.Bundles);

        // 開始建立 Container
        var builder = new ContainerBuilder();

        // Register your MVC controllers. (MvcApplication is the name of
        // the class in Global.asax.)
        builder.RegisterControllers(typeof(MvcApplication).Assembly);
        builder.RegisterControllers(Assembly.GetExecutingAssembly()).PropertiesAutowired();
        builder.RegisterType<DateService>()
                 .As<IDateService>()
                 .InstancePerLifetimeScope();

        // OPTIONAL: 註冊 web abstractions
        builder.RegisterModule<AutofacWebTypesModule>();

        // OPTIONAL: 啟用 property injection into action filters.
        builder.RegisterFilterProvider();

        // Set the dependency resolver to be Autofac.
        var container = builder.Build();
        DependencyResolver.SetResolver(new AutofacDependencyResolver(container));

    }
}