Creating a route using attribute routing

In this recipe, we will learn how to create a route using attribute routing.

Getting ready

We create a controller with an action method to decorate it with routing attributes.

How to do it...

Attribute routing is the ability to define a route by adding an attribute defining a route above an action method in a controller.

1. First, let's add a routing attribute to an action method specifying an id parameter:

//Route: /Laptop/10 
[Route("Products/{id}")] 
public ActionResult Details(int id) 

2. Next, let's add an optional parameter:

//Route: /Products/10/Computers or /Products/10
 [Route("Products/{id}/{category?}")] 
public ActionResult Details(int id, string category) 
We can see how to do that for a RESTfull Web API method :
 // GET api/values/5 
       [HttpGet("{id?}")] 
public string Get(int? id) 

3. Now, let's add RoutePrefix. This attribute will be applied to every action of this controller:

[Route("Products")] 
         public class HomeController : Controller...