asp.net mvc 5 - AuthenticationManager.GetExternalLoginInfoAsync() in Facebook -

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i created default mvc5 project , add facebook api keys;

startup.auth.cs

using microsoft.owin.security.facebook;              app.usefacebookauthentication(                appid: "id-here",                appsecret: "secret-id-here");

then set breakpoint @ externallogincallback method @ accountcontroller.

[allowanonymous]     public async task<actionresult> externallogincallback(string returnurl)     {         var logininfo = await authenticationmanager.getexternallogininfoasync();         if (logininfo == null)         {             return redirecttoaction("login");         }

but, authenticationmanager.getexternallogininfoasync() returns username , email empty.

how set owin include facebook email?

my problem solve after install-package microsoft.owin.security.facebook -pre.

so install package console manager install-package microsoft.owin.security.facebook -pre , facebook login info.


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