c# - ASP.net Web Api Versioning -


i have asp.net web api project , decided time support versioning. using official microsoft nuget support versioning (more info here), , decided version namespace (as exampled here).

unfortunately cannot code work. if call method this:

http://localhost:7291/api/saved/getnumberofsavedworkoutsforuser?api-version=2.0

i error: 

multiple types found match controller named 'saved'. can happen if route services request ('api/{controller}/{action}/{id}') found multiple controllers defined same name differing namespaces, not supported.

and if call this: http://localhost:7291/v2/saved/getnumberofsavedworkoutsforuser

i error 404:

the resource looking has been removed, had name changed, or temporarily unavailable.

i not sure doing wrong. here code:

startup.cs

public void configuration(iappbuilder app)     {         var configuration = new httpconfiguration();         var httpserver = new httpserver(configuration);           app.usecors(microsoft.owin.cors.corsoptions.allowall);          // reporting api versions return headers "api-supported-versions" , "api-deprecated-versions"         configuration.addapiversioning(o =>          {             o.assumedefaultversionwhenunspecified = true;             o.reportapiversions = true;              o.defaultapiversion = apiversion.default;         });           configuration.routes.maphttproute(             "versionedurl",             "v{apiversion}/{controller}/{action}/{id}",             defaults: null,             constraints: new { apiversion = new apiversionrouteconstraint() });          configuration.routes.maphttproute(             "versionedquerystring",             "api/{controller}/{action}/{id}",             defaults: null);           app.usewebapi(httpserver);          configureauth(app);     }

saved controller (v1)

namespace master.infrastructure.api.controllers {      [authorize]     [routeprefix("api/saved")]     [apiversion("1.0")]     public class savedcontroller : apicontroller     {          private readonly iuserservice _userservice;          public savedcontroller(iuserservice userservice)         {             _userservice = userservice;          }           [httpget]         [actionname("getnumberofsavedworkouts")]         public async task<numberofsavedworkouts> getnumberofsavedworkouts()         {             var numofsavedworkouts = new numberofsavedworkouts             {                 currentnumberofsavedworkouts =                     await _userservice.getnumberofsavedworkoutsforuserasync(user.identity.getuserid())             };              return numofsavedworkouts;         }      } }

saved controller (v2)

namespace master.infrastructure.api.v2.controllers {     [authorize]     [apiversion("2.0")]     [routeprefix("v{version:apiversion}/saved")]     public class savedcontroller : apicontroller     {          private readonly isavedworkoutservice _savedworkoutservice;           public savedcontroller(isavedworkoutservice savedworkoutservice)         {                    _savedworkoutservice = savedworkoutservice;         }           [actionname("getnumberofsavedworkoutsforuser")]         public async task<ihttpactionresult> getnumberofsavedworkoutsforuser()         {             var cnt = await _savedworkoutservice.countnumberofsavedworkoutsforuser(user.identity.getuserid());              return ok(cnt);         }     } }


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