Calling a Get method in Web API with attribute routing

Question

My WebApi.config looks like this:

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

which means it is configured to support both attribute based routing and conventional routing.

And the sample controller created:

[RoutePrefix("v1")]
public class Values1Controller : ApiController
{
    public IEnumerable<string> Get()
    {
        return new string[] { "value1", "value2" };

    }

    [Route("products")]
    public string Get(int id)
    {
        return "value";
    }
}

When I invoke http://localhost.domain/api/values1/v1/ the response is value1, value2

But, when I try to invoke http://localhost.domain/api/values1/v1/products/1 (notice the products attribute route on the public string Get(int id) method, the break point is not hit.

In other words, how to call the public string Get(int id) method with the attribute routing Route(products) on top of it?

Kiran · Accepted Answer · 2014-05-20 13:56:30Z

3

You use /v1/products?id=10 to hit the action public string Get(int id) or change your route template to be [Route("products/{id}")] to make request like /v1/products/10

Note that attributed controllers/actions cannot be reached by requests which match conventional routes, so that means you cannot do something like api/values/1 to reach public string Get(int id) action

answered May 20, 2014 at 13:56

Kiran

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2 Comments

now he who must not be named. Over a year ago

Great. Worked like a charm. Thanks a lot

now he who must not be named. Over a year ago

http://localhost:portNum/v1/products?id=10 hits the breakpoint when the routing attribute is [Route("products")]. http://localhost:portNum/v1/products/10 hits the breakpoint when the routing attribute is [Route("products/{id}")]. Nice explanation @Kiran. Thanks.

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