A route named 'DefaultApi' could not be found in the route collection.\r\nParameter name: name

  public CitationFactory(HttpRequestMessage request)
    {
        // Arrange.
        var configuration = new HttpConfiguration();
        request.Properties[System.Web.Http.Hosting.HttpPropertyKeys.HttpConfigurationKey] = configuration;

       _urlHelper=new UrlHelper(request);
    }




section.URL= _urlHelper.Link("DefaultApi", new { id = 1 }); 

I have created URLHelper to create link in asp.net webapi. But it is not working.