C# MVC Create route for all methods?

Question

Old

I have created a new route for my application, which is as follows

        routes.MapRoute(
            name: "Default",
            url: "{custom}/{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },
            constraints: new { custom = new RouteValidation() }
        );

While it works, it only works for Home/Index. When I want to go to Home/Login it just reloads the page. This worked before the new route.

My question, do I need to create a new route for every method or is there a better way to do this?

Update

What I would like to get is an url like this localhost/{custom}/{controller}/{action}/{id} where 'custom' is a unique id to get information from a company.

1234 = company 'A' -> localhost/1234/Home/Index
0987 = company 'B' -> localhost/0987/Home/Index

Here is my complete routing

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

    routes.MapRoute(
        name: "Route1",
        url: "{custom}/{controller}/{action}/{id}",
        defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },
        constraints: new { custom = new CustomerServiceModule.Helpers.RouteValidation() }
    );

    routes.MapRoute(
        name: "Default",
        url: "{controller}/{action}/{id}",
        defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
    );

}

Here is my RouteValidation, this check whether the {custom} is a valid id or not, this works.

public class RouteValidation : IRouteConstraint
{
    public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
    {                        
        if (routeDirection == RouteDirection.IncomingRequest)
        {
            //returns true if the 'custom' is valid else false
            return CheckPublicationUniqueID(values["custom"].ToString());
        }

        return false;
    }
}

And here are some routes of the application

Index/Home
Index/Login
Subscription/Index
Subscription/Edit/{id}
Subscription/Details/{id}
Invoice/Index
History/Index

The problem that I have is that if I navigate to lets say 'Subscription/Index' the 'custom' is gone from the url and if I remove the default route it does not go to any of the above named urls.

Answer 1

Well I found the solution for my problem.

    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            "CompanyRouteWithoutParameters",
            "{company}/{controller}/{action}",
            new { controller = "Home", action = "Index" },
            new { company = new RouteValidation() }
        );

        routes.MapRoute(
            "CompanyRouteWithParameters",
            "{company}/{controller}/{action}/{id}",
            new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );
    }