How to setu up a route in web API 2 with attribute routing

The way web API routes work is you need to add

config.MapHttpAttributeRoutes();

To your WebApiConfig.cs file if it isn't there.

Then as for the route you have two attributes to keep in mind, RoutePrefix and Route.

So an example of this would be

[RoutePrefix("api/people")]
public class PeopleController : Controller
{
   [Route("names")]
   public IHttpActionResult GetNames()
   { 
      var names = //do a DB select operation or something
      return Ok(names);
   }
}

This example allows you to use the url http://localhost/api/people/names instead of the uglier version of http://localhost/people/getnames.

Now for actions with parameters in web api routes you'd do something like

[RoutePrefix("api/people")]
public class PeopleController : Controller
{
   [Route("names/{personId}")]
   public IHttpActionResult GetNameForPersion(int personId)
   { 
      var names = //do a DB select operation or something
      return Ok(names);
   }
}

This would allow you add an ID that represents a person to the URL. Keep in mind, the parameter name in your action must be the same name used in the route. Otherwise i believe you'll get a 404 error.

So this url would be something like http://localhost/api/people/names/1

If you have any more questions here is a good reference:

Attribute Routing in ASP.NET Web API 2 | The ASP.NET Site[^]