What Is Attribute based Routing?

What Is Attribute based Routing?

What Is Attribute based Routing?
MVC 5 supports a new type of routing that called attribute routing. It used to define routes.

Enable Attribute Routing - If you want to use Attribute Routing, you must enable it by calling MapMvcAttributeRoutes on the RouteCollection.

public class RouteConfig
{
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
      
        //Enables Attribute Routing
        routes.MapMvcAttributeRoutes();
    }
}

Defining a Route - A route attribute has to be defined on top of an action method or on the top of a controller.

The Example looks like,
public class HomeController: BaseController
{
  [Route("User/GetUsers")]
  public ActionResult GetUsers(int Id)
  {
      return View();
  }
}

Custom Routes -
public class RouteConfig
{
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            name: "User",
            url: "User/{id}",
            defaults: new { controller = "User", action = "Index"}
        );

        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );
    }
}
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