help,if custom RouteConfig,the 'area' parameter not work in asp.net mvc

[ma7x]

file:App_Start/RouteConfig.cs

namespace XXXXXXX
{
    public class RouteConfig
    {
        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
            routes.LowercaseUrls = true;
            routes.MapRoute(
               name: "Default",
               url: "{area}/{controller}/{action}/{id}",
                //defaults: new { controller = "Default", action = "Index", area = "000000", id = UrlParameter.Optional },
               defaults: new { controller = "Home", action = "Index", area = "000000", id = UrlParameter.Optional },
               constraints: new { area = @"\d{6}" }
            );
        }
    }
}

then

[DonutOutputCache(Duration = 300, VaryByCustom = "area")]
public ActionResult Index(int area)
{
    return View();
}

then

• http://localhost/000000/home/index
• http://localhost/110000/home/index

it is not work,how to do?

[ma7x]

any body the same question like me? I try to fix the question a lot of days ,but not work , headache!

[moonpyk]

Don't specify the VaryByCustom for area, MvcDonutCaching handles areas natively

[ma7x]

thanks reply.
it's not area ,it's like id,
I have many url like

http://localhost/000000/home/index
http://localhost/110000/home/index
http://localhost/210000/home/index
http://localhost/310000/home/index
...
http://localhost/312345/home/index

you can new webapplication and copy the routeconfig ,
[DonutOutputCache(Duration = 300, VaryByCustom = "area")] to the home/index controller
it is not work, change the 'area' to 'somecustomparm' is the same result

[moonpyk]

Just remove the VaryByCustom part dude, it has another meaning than the one you think

[ma7x]

I have tried,not work .