MVC C# custom Routing

Question

I have a Controller called api, the following

routes.MapRoute(
  name: "api",
  url: "api/",
  defaults: new { controller = "api" }
);

inside the controller I have an action as follows

[Route("fleet/{id:guid}/selectedfleet")]
public ActionResult selectedfleet(Guid id)
{
    return null;
}

the return null is just to test this out, I'm trying to get a breakpoint on it but i am getting url not found, when trying to access something like http://localhost:50593/api/fleet/2df3893d-c406-48fe-8443-1622ddc51af2/selectedfleet

Answer 1

First you need to make sure that if you want to use attribute routing in MVC, that it is enabled.

public class RouteConfig {

    public static void RegisterRoutes(RouteCollection routes) {

       routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

       routes.MapMvcAttributeRoutes(); //<--IMPORTANT for attribute routing in MVC

        // Convention-based routing.

        //...other code removed for brevity
    }
}

when trying to access something like http://localhost:50593/api/fleet/2df3893d-c406-48fe-8443-1622ddc51af2/selectedfleet via attribute routing you need to make sure that the controller has the proper route template defined to match the request.

[RoutePrefix("api")]
public class ApiController : Controller {

    //GET api/fleet/2df3893d-c406-48fe-8443-1622ddc51af2/selectedfleet
    [HttpGet]
    [Route("fleet/{id:guid}/selectedfleet")]
    public ActionResult selectedfleet(Guid id) { ... }
}

Make sure that your controller and route does not conflict Web API routes if you have it included in the MVC project.