ASP.NET MVC passing an ID in an ActionLink to the controller

<li>
    <%= Html.ActionLink("Modify Villa", "Modify", "Villa", new { @id = "1" })%></li>


    public ActionResult Modify(string ID)
    {

        ViewData["Title"] =ID;
        return View();
    }

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

<%=Html.ActionLink("Modify Villa", "Modify", new {id = "1"})%>

<%=Html.ActionLink("Modify Villa", "Modify", "Villa", new {id = "1"}, null)%>

new { id = "1" }