asp.net mvc routing id parameter

Question

I am working on a website in asp.net mvc. I have a route

routes.MapRoute(
    \"Default\", // Route name
    \"{controller}/{action}/{id}\", // URL with pa         


        

Answer 1

Option 1

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

public ActionResult ErrorPage(int id)
{
    return View();
}

Option 2

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

public ActionResult ErrorPage(int errorno)
{
    return View();
}

Option 3

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

public ActionResult ErrorPage(int id)
{
    int errorno = id;
    return View();
}