public class HomeController : Controller
{
    public ActionResult Index(string id)
    {
        return View();
    }

    public ActionResult About(string id)
    {
        return View();
    }
}

@Url.Action("About", "Home")

public class HomeController : Controller
{
    public ActionResult Index(string id)
    {
        return View();
    }
}

@Url.Action("Index", "Home")

@UrlHelper.GenerateUrl(
    "Default",
    "index",
    "home",
    null,
    Url.RouteCollection,
    // That's the important part and it is where we kill the current RouteData
    new RequestContext(Html.ViewContext.HttpContext, new RouteData()),
    false
)