c# - How to Use MVC Controller and WebAPI Controller in same project -

i trying use mvc controller , webapi controller in same project got 404 errors webapi . started project mvc project in vs 2015 added webapi controlle , default code giving 404 error

what possible solution . have tried solution on stackoverflow didn't worked 1 of them below link (accepted answer on there ) all asp.net web api controllers return 404

global.asax file code :

protected void application_start()         {             arearegistration.registerallareas();             globalconfiguration.configure(webapiconfig.register);//web api 1st             filterconfig.registerglobalfilters(globalfilters.filters);             routeconfig.registerroutes(routetable.routes);             bundleconfig.registerbundles(bundletable.bundles);          } 

webapi.config file

public static class webapiconfig     {         public static void register(httpconfiguration config)         {             config.maphttpattributeroutes();              config.routes.maphttproute(                 name: "defaultapi",                 routetemplate: "api/{controller}/{id}",                 defaults: new { id = routeparameter.optional }             );          }     } 

route config file code

  public class routeconfig     {         public static void registerroutes(routecollection routes)         {             routes.ignoreroute("{resource}.axd/{*pathinfo}");              routes.maproute(                 name: "default",                 url: "{controller}/{action}/{id}",                 defaults: new { controller = "home", action = "index", id = urlparameter.optional }             );          }     } 

webapi controller code

using system; using system.collections.generic; using system.linq; using system.net; using system.net.http; using system.web.http; using o365_apis_start_aspnet_mvc.models; using microsoft.identitymodel.clients.activedirectory; using o365_apis_start_aspnet_mvc.helpers; using system.threading.tasks;  namespace o365_apis_start_aspnet_mvc.controllers {     public class mailapicontroller : apicontroller     {         private mailoperations _mailoperations = new mailoperations();         //async task<backofficeresponse<list<country>>>          // get: api/mailapi         public ienumerable<string> get()         {             return new string[] { "value1", "value2" };         }          // get: api/mailapi/5         public string get(int id)         {             return "value";         }          // post: api/mailapi         public void post([frombody]string value)         {         }          // put: api/mailapi/5         public void put(int id, [frombody]string value)         {         }          // delete: api/mailapi/5         public void delete(int id)         {         }     } } 

also getting nuget restore error in same solution error nuget failed restore png

you need register routing web api before registering routing mvc, app_start()function should this:

protected void application_start() {     arearegistration.registerallareas();     globalconfiguration.configure(webapiconfig.register);//web api 1st     filterconfig.registerglobalfilters(globalfilters.filters);     routeconfig.registerroutes(routetable.routes);//mvc 2nd     bundleconfig.registerbundles(bundletable.bundles); }