public static void Register(HttpConfiguration config) { using (var context = new NORTHWNDContext()) { config.EnableCors(new EnableCorsAttribute("*", "*", "*", "DataServiceVersion, MaxDataServiceVersion")); config.Routes.MapODataRoute( routeName: "odata", routePrefix: "", model: context.GetEdm(), batchHandler: new DefaultODataBatchHandler(GlobalConfiguration.DefaultServer) ); } }