Autofac - handle multiple requests in ASP.Net MVC 3

I am new to Autofac and IoC so now I try to build my firs ASP.NET MVC 3 application with IoC.

Here with this code I try manually to register ProductController (in Global.asax)开发者_如何学编程.

protected void AutofacIocRegistration()
  {

    var builder = new ContainerBuilder();
    //PRODUCT CONTROLLER
    var registration = builder.Register(c => new ProductsController(c.Resolve<IProductRepository>()));
    builder.RegisterType<ProductsController>().InstancePerHttpRequest();

    SqlProductsRepository productRepository =  new SqlProductsRepository(DATABASE_CONNECTION);
    builder.RegisterInstance(new ProductsController(productRepository));

    IContainer container = builder.Build();
    DependencyResolver.SetResolver(new AutofacDependencyResolver(container));

}

When I build the application for the first time, I get list of 4 products in the HTML page (as I expected), but when I refresh the page or go "next" to other list of products then I get the error

A single instance of controller 'WebUI.Controllers.ProductsController' cannot be used to handle multiple requests. If a custom controller factory is in use, make sure that it creates a new instance of the controller for each request.

As you can see in this code

builder.RegisterType<ProductsController>().InstancePerHttpRequest();

I try to solve this with InstancePerHttpRequest() method but unsuccessful, if you have any suggestion please post.

Thanks for any help in advance.

use the below method to register your controllers

builder.RegisterControllers(Assembly.GetExecutingAssembly());

if you are using constructor injection in the controllers you can register your repository like this

builder.RegisterType<SqlProductsRepository>().As<IProductRepository>();

this way it will create the object graph when it needs to create the controller