c# - MVC Attribute Routing Not Working

Question

I'm relatively new to the MVC framework but I do have a functioning Web Project with an API controller that utilizes AttributeRouting (NuGet package) - however, I'm starting another project and it just does not want to follow the routes I put in place.

Controller:

public class BlazrController : ApiController
{
    private readonly BlazrDBContext dbContext = null;
    private readonly IAuthProvider authProvider = null;

    public const String HEADER_APIKEY = "apikey";
    public const String HEADER_USERNAME = "username";

    private Boolean CheckSession()
    {
        IEnumerable<String> tmp = null;
        List<String> apiKey = null;
        List<String> userName = null;

        if (!Request.Headers.TryGetValues(HEADER_APIKEY, out tmp)) return false;
        apiKey = tmp.ToList();

        if (!Request.Headers.TryGetValues(HEADER_USERNAME, out tmp)) return false;
        userName = tmp.ToList();

        for (int i = 0; i < Math.Min(apiKey.Count(), userName.Count()); i++)
            if (!authProvider.IsValidKey(userName[i], apiKey[i])) return false;

        return true;
    }

    public BlazrController(BlazrDBContext db, IAuthProvider auth)
    {
        dbContext = db;
        authProvider = auth;
    }

    [GET("/api/q/users")]
    public IEnumerable<string> Get()
    {

        return new string[] { "value1", "value2" };
    }

    [GET("api/q/usersauth")]
    public string GetAuth()
    {
        if (!CheckSession()) return "You are not authorized";

        return "You are authorized";
    }
}

AttributeRoutingConfig.cs

public static class AttributeRoutingConfig
{
    public static void RegisterRoutes(RouteCollection routes) 
    {    
        // See http://github.com/mccalltd/AttributeRouting/wiki for more options.
        // To debug routes locally using the built in ASP.NET development server, go to /routes.axd

        routes.MapAttributeRoutes();
    }

    public static void Start() 
    {
        RegisterRoutes(RouteTable.Routes);
    }
}

Global.asax.cs:

// Note: For instructions on enabling IIS6 or IIS7 classic mode, // visit http://go.microsoft.com/?LinkId=9394801

public class WebApiApplication : System.Web.HttpApplication
{
    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();

        WebApiConfig.Register(GlobalConfiguration.Configuration);
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        BundleConfig.RegisterBundles(BundleTable.Bundles);
    }
}

When I try to navigate to /api/q/users - I get a 404 not found error. If I change the routes to be "/api/blazr/users" - I get an error about multiple actions and not being able to determine which action to take.

Any help is appreciated - I really just need a small nudge to figure out where the issue is, no need to solve it completely for me (I need to learn!)

Thanks

EDIT

routes.axd:

api/{controller}/{id}
{resource}.axd/{*pathInfo}          
{controller}/{action}/{id}

Answer 1

Not only do you have to have the call to routes.MapMvcAttributeRoutes() in your App_StartRouteConfig.cs file, it must appear before defining your default route! I add it before that and after ignoring {resource}.axd{*pathInfo}. Just found that out trying to get attribute routing to work correctly with my MVC 5 website.

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

        routes.MapMvcAttributeRoutes();

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

    }