c# - ASP.Net web API Help Page - no content -

i installed package nuget, uncommented line helppageconfig.cs-

config.setdocumentationprovider(new xmldocumentationprovider(httpcontext.current.server.mappath("~/app_data/xmldocument.xml"))); 

i've set same file under properties->build->xml documentation file, added new global.asax.cs file in call registration areas under application_start method:

protected void application_start(object sender, eventargs e) {      arearegistration.registerallareas(); } 

i've added summary of controllers:

public class incidentscontroller : apicontroller {      /// <summary>      /// summary      /// </summary>      /// <param name="incidentid">this incidentid</param>      /// <returns>it returns something</returns>      [route("{incidentid}")]      [httpget]      public object getincidentbyid(int incidentid)      {             return incidents.singleordefault(i => i.id == incidentid);      } } 

when run webpage , go '/help' thing see is

asp.net web api page

introduction

provide general description of apis here.

and empty page after that...

i tried debug , in helpcontroller.cs in:

public actionresult index() {             viewbag.documentationprovider = configuration.services.getdocumentationprovider();             return view(configuration.services.getapiexplorer().apidescriptions); } 

i no apidescriptions.

what missing? i'll appreciate help!

i able solve adding globalconfiguration.configure (webapiconfig.register); in application_start () method. because application uses owin registering apis in startup.configuration (iappbuilder app).