c# - Authorize user using external authentication provider -


i followed tutorial:

https://docs.microsoft.com/en-us/aspnet/mvc/overview/security/create-an-aspnet-mvc-5-app-with-facebook-and-google-oauth2-and-openid-sign-on

but @ end don't want use generated methods , asp data tables. me generated methods login complicated. want redirect user login external provider, set him [authorize] , use user claims provider (email, username,subject).

i tried in externallogincallback: 

        public async task<actionresult> externallogincallback(string          returnurl, string guid, string appid)         {         externallogininfo logininfo = null;          logininfo = await authenticationmanager.getexternallogininfoasync();         if (logininfo.externalidentity.isauthenticated)         {             redirecttoaction("index", "access");         }          ...         }

but still drops down 

var result = await signinmanager.externalsigninasync(logininfo, ispersistent: false);

can pleas?


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