Asp.Net MVC - Overload Action method

I created an asp.net mvc web site

My problem is how to implemented overload acti开发者_C百科on method

Controller

    public ActionResult Index(int id)
    {
        //code
        return View(model);
    }

    public ActionResult Index()
    {
        //code  
        return View(model);
    }

View

    <div id="menucontainer">
            <ul id="menu">          
                    <li><%= Html.ActionLink("Home", "Index", "Home")%></li>
                    <%if (Page.User.Identity.IsAuthenticated)
                      {%>
                    <li><%= Html.ActionLink("Profilo", "Index", "Account")%></li>
                    <%} %>
                    <li><%= Html.ActionLink("About", "About", "Home")%></li>
                </ul>
            </div>

Usercontrol (ascx) inserted in the View. This usercontrol lists the friends of the profile (view)

   <td>
            <%= Html.ActionLink(Html.Encode(item.Nominativo), "Index", "Account", new { id = item.IdAccount }, null)%>
        </td>

Global asax

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

            routes.MapRoute(
                "Default", 
                "{controller}/{action}/{id}", 
                new { controller = "Home", action = "Index", id = UrlParameter.Optional } 
            );
        }

when i click the action Index in the view, return the error "Can not find the resource... ecc.."

I found several answer for this problem (using attribute ecc..) but is not works.

There's a way to do that? I must add a maproute in a global asax?

thanks so much for your replies

You need to decorate both overloads with an ActionMethodSelector attribute for disambiguation. ASP.NET MVC does not know how to select the appropriate overload.

A workaround is to handle both actions in the same method:

public ActionResult Index(int? id) {

   if (id.HasValue) {
      // id present
   } else {
      // id not present
   }
}