How to enable Attribute Routing in ASP.NET MVC?

Enabling attribute routing in your ASP.NET MVC5 application is simple, just add a call to routes.MapMvcAttributeRoutes() method with in RegisterRoutes() method of RouteConfig.cs file.

public class RouteConfig {
	public static void RegisterRoutes(RouteCollection routes) {
		routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
		//enabling attribute routing
		routes.MapMvcAttributeRoutes();
	}
}

You can also combine attribute routing with convention-based routing.

public class RouteConfig {
	public static void RegisterRoutes(RouteCollection routes) {
		routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
		//enabling attribute routing
		routes.MapMvcAttributeRoutes();
		//convention-based routing
		routes.MapRoute(name: "Default", url: "{controller}/{action}/{id}", defaults: new {
			controller = "Home", action = "Index", id = UrlParameter.Optional
		});
	}
}