asp.net mvc 3 - making URL lowercase. Any easy or builtin way?

Question

Is there any easy/builtin way to make URL in lowercase for MVC3.

I have code that could do it but looking something simple to implement.

 routes.MapRouteLowercase(
                "Default", // Route name
                "{controller}/{action}/{id}", // URL with parameters
                new { controller = "Home", action = "index", id = UrlParameter.Optional } // Parameter defaults
            );

public class LowercaseRoute : Route
    {
        public LowercaseRoute(string url, IRouteHandler routeHandler)
            : base(url, routeHandler)
        {
        }

        public LowercaseRoute(string url, RouteValueDictionary defaults, IRouteHandler routeHandler)
            : base(url, defaults, routeHandler)
        {
        }

        public LowercaseRoute(string url, RouteValueDictionary defaults, RouteValueDictionary constraints, IRouteHandler routeHandler)
            : base(url, defaults, constraints, routeHandler)
        {
        }

        public LowercaseRoute(string url, RouteValueDictionary defaults, RouteValueDictionary constraints, RouteValueDictionary dataTokens, IRouteHandler routeHandler)
            : base(url, defaults, constraints, dataTokens, routeHandler)
        {
        }

        public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
        {
            VirtualPathData path = base.GetVirtualPath(requestContext, values);

            if (path != null)
            {
                path.VirtualPath = path.VirtualPath.ToLowerInvariant();
            }

            return path;
        }
    }




public static class RouteCollectionExtensions
    {
        public static Route MapRouteLowercase(this RouteCollection routes, string name, string url)
        {
            return routes.MapRouteLowercase(name, url, null /* defaults */, (object)null /* constraints */);
        }

        public static Route MapRouteLowercase(this RouteCollection routes, string name, string url, object defaults)
        {
            return routes.MapRouteLowercase(name, url, defaults, (object)null /* constraints */);
        }

        public static Route MapRouteLowercase(this RouteCollection routes, string name, string url, object defaults, object constraints)
        {
            return routes.MapRouteLowercase(name, url, defaults, constraints, null /* namespaces */);
        }

        public static Route MapRouteLowercase(this RouteCollection routes, string name, string url, string[] namespaces)
        {
            return routes.MapRouteLowercase(name, url, null /* defaults */, null /* constraints */, namespaces);
        }

        public static Route MapRouteLowercase(this RouteCollection routes, string name, string url, object defaults, string[] namespaces)
        {
            return routes.MapRouteLowercase(name, url, defaults, null /* constraints */, namespaces);
        }

        public static Route MapRouteLowercase(this RouteCollection routes, string name, string url, object defaults, object constraints, string[] namespaces)
        {
            if (routes == null)
            {
                throw new ArgumentNullException("routes");
            }
            if (url == null)
            {
                throw new ArgumentNullException("url");
            }

            Route route = new LowercaseRoute(url, new MvcRouteHandler())
            {
                Defaults = new RouteValueDictionary(defaults),
                Constraints = new RouteValueDictionary(constraints),
                DataTokens = new RouteValueDictionary()
            };

            if ((namespaces != null) && (namespaces.Length > 0))
            {
                route.DataTokens["Namespaces"] = namespaces;
            }

            routes.Add(name, route);

            return route;
        }

        public static Route MapRouteLowercase(this AreaRegistrationContext context, string name, string url)
        {
            return context.MapRouteLowercase(name, url, (object)null /* defaults */);
        }

        public static Route MapRouteLowercase(this AreaRegistrationContext context, string name, string url, object defaults)
        {
            return context.MapRouteLowercase(name, url, defaults, (object)null /* constraints */);
        }

        public static Route MapRouteLowercase(this AreaRegistrationContext context, string name, string url, object defaults, object constraints)
        {
            return context.MapRouteLowercase(name, url, defaults, constraints, null /* namespaces */);
        }

        public static Route MapRouteLowercase(this AreaRegistrationContext context, string name, string url, string[] namespaces)
        {
            return context.MapRouteLowercase(name, url, (object)null /* defaults */, namespaces);
        }

        public static Route MapRouteLowercase(this AreaRegistrationContext context, string name, string url, object defaults, string[] namespaces)
        {
            return context.MapRouteLowercase(name, url, defaults, null /* constraints */, namespaces);
        }

        public static Route MapRouteLowercase(this AreaRegistrationContext context, string name, string url, object defaults, object constraints, string[] namespaces)
        {
            if (namespaces == null && context.Namespaces != null)
            {
                namespaces = context.Namespaces.ToArray();
            }

            Route route = context.Routes.MapRouteLowercase(name, url, defaults, constraints, namespaces);
            route.DataTokens["area"] = context.AreaName;

            // disabling the namespace lookup fallback mechanism keeps this areas from accidentally picking up
            // controllers belonging to other areas
            bool useNamespaceFallback = (namespaces == null || namespaces.Length == 0);
            route.DataTokens["UseNamespaceFallback"] = useNamespaceFallback;

            return route;
        }
    }

Answer 1

I've just noticed that there is a new property in .NET Framework 4.5. Works great! RouteCollection.LowercaseUrls

Set LowercaseUrls to true

public static void RegisterRoutes(RouteCollection routes)
{
    routes.LowercaseUrls = true;
    ...
}

Create a link

@Html.ActionLink("Log in", "Login", "Account")

That will create awesome, lowercase url :)

<a href="/account/login">Log in</a>