Routing optional parameters in ASP.NET MVC 5

asp.net, asp.net-mvc, asp.net-mvc-5, c#, routes

Solution

Maybe you should try to have your enums as integers instead?

This is how I did it

public enum ECacheType
{
    cache=1, none=2
}

public enum EFileType 
{
    t1=1, t2=2
}

public class TestController
{
    [Route("{type}/{library}/{version}/{file?}/{renew?}")]
    public ActionResult Index2(EFileType type,
                              string library,
                              string version,
                              string file = null,
                              ECacheType renew = ECacheType.cache)
    {
        return View("Index");
    }
}

And my routing file

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

    // To enable route attribute in controllers
    routes.MapMvcAttributeRoutes();

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

I can then make calls like

http://localhost:52392/2/lib1/ver1/file1/1
http://localhost:52392/2/lib1/ver1/file1
http://localhost:52392/2/lib1/ver1

or

http://localhost:52392/2/lib1/ver1/file1/1/
http://localhost:52392/2/lib1/ver1/file1/
http://localhost:52392/2/lib1/ver1/

and it works fine...

Problem

I am creating an ASP.NET MVC 5 application and I have some issues with routing. We are using the attribute `Route` to map our routes in the web application. I have the following action: ``` [Route("{type}/{library}/{version}/{file?}/{renew?}")] public ActionResult Index(EFileType type, string library, string version, string file = null, ECacheType renew = ECacheType.cache) { // code... } ``` We only can access this URL if we pass the slash char `/` in the end of `url`, like this: ``` type/lib/version/file/cache/ ``` It works fine but does not work without `/`, I get a `404` not found error, like this ``` type/lib/version/file/cache ``` or this (without optional parameters): ``` type/lib/version ``` I would like to access with or without `/` char at the end of `url`. My two last parameters are optional. My `RouteConfig.cs` is like this: ``` public class RouteConfig { public static void RegisterRoutes(RouteCollection routes) { routes.IgnoreRoute("{resource}.axd/{*pathInfo}"); routes.MapMvcAttributeRoutes(); } } ``` How can I solve it? Make the slash `/` be optional too?

Original source