c# - SimpleInjector doesn't work - Web API on OWIN -

owinstartup.cs

public class owinstartup {     internal static idataprotectionprovider dataprotectionprovider { get; private set; }      public void configuration(iappbuilder app)     {         dataprotectionprovider = app.getdataprotectionprovider();         var config = new httpconfiguration();          simpleinjectorconfig.configure(app);         configureoauth(app);         webapiconfig.register(config);         app.usecors(corsoptions.allowall);         app.usewebapi(config);       }      private static void configureoauth(iappbuilder app)     {         app.createperowincontext(             () => (idisposable)globalconfiguration.configuration.dependencyresolver.getservice(                 typeof(appusermanager)));          var options = new oauthauthorizationserveroptions         {             tokenendpointpath = new pathstring("/token"),             provider = new appauthprovider(),             allowinsecurehttp = true,         };          app.useoauthauthorizationserver(options);         app.useoauthbearerauthentication(new oauthbearerauthenticationoptions());     } } 

simpleinjectorconfig.cs

public static class simpleinjectorconfig {     public static void configure(iappbuilder app)     {         var container = new container();         container.options.defaultscopedlifestyle = new asyncscopedlifestyle();          //allows scoped instances resolved during owin request         app.use(async (context, next) =>         {             using (asyncscopedlifestyle.beginscope(container))             {                 await next();             }         });          container.register<appidentitydbcontext>(lifestyle.scoped);         container.register<appusermanager>(lifestyle.scoped);         container.register(             () =>                 container.isverifying                     ? new owincontext().authentication                     : httpcontext.current.getowincontext().authentication, lifestyle.scoped);         container.register<appsigninmanager>(lifestyle.scoped);          container.verify();          globalconfiguration.configuration.dependencyresolver =             new simpleinjectorwebapidependencyresolver(container);     } } 

so in implemenation of oauthauthorizationserverprovider called appauthprovider im trying instance of appusermanager ( need find user ) using code:

var manager = context.owincontext.get<appusermanager>(); 

but dont know why still null. dont know because everythings seems configured correctly. ideas ? !

i found solution. updated code below:

owinstartup.cs

 public class owinstartup {     internal static idataprotectionprovider dataprotectionprovider { get; private set; }      public void configuration(iappbuilder app)     {         dataprotectionprovider = app.getdataprotectionprovider();         var container = simpleinjectorconfig.configure();          //allows scoped instances resolved during owin request         app.use(async (context, next) =>         {             using (asyncscopedlifestyle.beginscope(container))             {                 await next();             }         });          var config = new httpconfiguration         {             dependencyresolver = new simpleinjectorwebapidependencyresolver(container)         };          configureoauth(app, config);         webapiconfig.register(config);         app.usecors(corsoptions.allowall);         app.usewebapi(config);       }      private static void configureoauth(iappbuilder app, httpconfiguration config)     {         app.createperowincontext(             () => (appusermanager)config.dependencyresolver.getservice(                 typeof(appusermanager)));          var options = new oauthauthorizationserveroptions         {             tokenendpointpath = new pathstring("/token"),             provider = new appauthprovider(),             //todo: zmienic przy wyjsciu w live.             allowinsecurehttp = true,         };          app.useoauthauthorizationserver(options);         app.useoauthbearerauthentication(new oauthbearerauthenticationoptions());     } } 

simpleinjectorconfig.cs

 public static class simpleinjectorconfig {     public static container configure()     {         var container = new container();         container.options.defaultscopedlifestyle = new asyncscopedlifestyle();          container.register<appidentitydbcontext>(lifestyle.scoped);         container.register<appusermanager>(lifestyle.scoped);         container.register(             () =>                 container.isverifying                     ? new owincontext().authentication                     : httpcontext.current.getowincontext().authentication, lifestyle.scoped);         container.register<appsigninmanager>(lifestyle.scoped);          container.verify();          return container;     } } 

maybe use it.