Pass Custom Data through URL Routing in ASP.Net

hi every one 

i use url routing according to this article

http://msdn.microsoft.com/en-us/library/cc668202%28v=vs.90%29.aspx

this is global.asax code

 void Application_Start(object sender, EventArgs e)
    {
        RegisterRoutes(RouteTable.Routes);
    }

    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.Add("BikeSaleRoute", new Route
        (
           "bikes/sale",
           new CustomRouteHandler("~/Details.aspx")
        ));
    }

here when we type eg:www.behtob.com/bikes/sale  it go to details.aspx  now i want instead of bikes/sale that define here it read Behcode column from DB and when my user type their becode like this   www.behtob.com/1111  it go to details.aspx 

how i can doo it?

this is my users table