No HTTP resource was found that matches the request URI in Web API

Question

I have configured my WebApiConfig like this:

public static void Register(HttpConfiguration config)
{
    config.Routes.MapHttpRoute(
        name: \"DefaultApi\"         


        

Answer 1

what is the name of your controller and action ?

The URL should be

http://localhost:8598/api/Controller/Action

It does not map to the Route Configuration you have specified, hence the pipeline is unable to locate the correct Controller. The /id should not be in the path it must be in the body or the query parameters ( I got stumped in haste !!)

Example : -

public class FooController : ApiController
    {
        public int GetIndex(int id)
        {
            return id;
        }
    }

localhost:58432/api/foo/GetIndex?Id=1

O/P :- 1

Note:- If your action name is GetIndex then the URL must be GetIndex not just Index. Optionally you can specify the [HttpGet] attribute for the action.

If you have the following as well in your WebApi.config

config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{id}",
                defaults: new { id = RouteParameter.Optional }
            );

Then http://localhost:58432/api/foo?Id=1 would also be a legitimate route. Not sure if you would want that.

Also, With WebAPI as far as possible stick to non action based routing , MVC is meant for that. It is not the recommended way.