url.Action(controller, action) not routing as expected

Question

In my ASP.NET MVC 3, I am using this code

<a href=@url.Action("myController", "myaction")>

But when I click on it, it does't go to my action. Instead, in the URL I see this

http://localhost:1402/?Length=2

Am I missing something?

Thanks.

Edit :

Here are my routes :

public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            "Default", // Route name
            "{controller}/{action}/{id}", // URL with parameters
            new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
        );

    }

Answer 1

the first argument is interpretted as the Action

@url.Action("myaction","myController")