Register Web API route in Umbraco 6

gistfile1.txt

using System.Linq;
using System.Web.Http;
using System.Web.Routing;
using Umbraco.Core.Events;
using Umbraco.Core.Models;
using Umbraco.Core.Publishing;
using umbraco.interfaces;

namespace Site.EventHandlers
{
    public class StartupEventHandlers : IApplicationStartupHandler
    {
        public StartupEventHandlers()
        {
            Umbraco.Web.UmbracoApplication.ApplicationStarting +=
                UmbracoApplicationStarting;
        }

        static void UmbracoApplicationStarting(object sender, System.EventArgs e)
        {
            RouteTable.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{id}",
                defaults: new { id = RouteParameter.Optional }
            );
        }
    }
}