asp.net mvc - C# MVC Rote custom configuration -

i have:

routes.maproute(             name: "default",             url: "{culture}/{controller}/{action}/{id}",             defaults: new { culture = "en-us", controller = "home", action = "index", id = urlparameter.optional }         ); 

that makes urls this:

www.site.com/en-us/contactus/index

www.site.com/es/contactus/index

my question how configure routes when "culture" "en-us" urls this:

www.site.com/contactus/index

but when "culture" "es" or other culture (besides en-us) urls (example below "es" culture):

www.site.com/es/contactus/index

your routes should follows:

    public static void registerroutes(routecollection routes)     {         routes.ignoreroute("{resource}.axd/{*pathinfo}");          routes.maproute(             name: "culture",             url: "{culture}/{controller}/{action}/{id}",             defaults: new { culture = "en-us", controller = "home", action = "index", id = urlparameter.optional }         );         routes.maproute(             name: "default",             url: "{controller}/{action}/{id}",             defaults: new { culture="en-us", controller = "home", action = "index", id = urlparameter.optional }         );     } 

the idea when receive url culture first route handle it.

otherwise, if receive route without culture, default route take care of "hard coding" default culture.