asp.net MVC - cannot understand why routing is not working

Question

In my ASP.NET Web API project, I have the following routing defined in Global.asax:

routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "{controller}/{action}"
            );

            routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}"
            );

I have a controller called UserFeedController with an action with the following signature:

public UserFeedResponseViewModel GetUserFeed(int id)

When I enter the url http://api.mydomain.com/UserFeed/GetUserFeed/4 I get a 404. Why doesn't the second routing rule apply?

MVC routing is quite beyond my power to comprehend.

IAmTimCorey · Accepted Answer · 2012-05-02 13:39:03Z

2

Your two routes are basically the same. MVC finds the first route that matches and since you have specified a controller and an action, it thinks you are good to go. It will ignore the id that you specified (I believe it might try to pass it in as a parameter).

I would suggest changing your first route to include API/ at the beginning like so:

routes.MapHttpRoute( 
            name: "DefaultApi", 
            routeTemplate: "API/{controller}/{action}" 
        ); 

        routes.MapHttpRoute( 
            name: "Default", 
            url: "{controller}/{action}/{id}" 
        );

That will insure that your routes work properly.

edited May 2, 2012 at 13:39

answered May 2, 2012 at 12:43

IAmTimCorey

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1 Comment

David Over a year ago

My God! I didn't notice until now that the code calls two separate methods: MapRoute() and MapHttpRoute(). Why on earth is routing done differently for Web API controllers?! I have changed the code to always use MapHttpRoute() and now I'm getting behaviour I expect...

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