Tahir Jadoon: ASP.Net Identity 2 Authentication Via Facebook Setup

Step # 28

· Create a new app

· Then Enter

o an appropriate app name

o a category: Apps for pages

o click create app id

· Got to settings and pick up appid and secret

By specifying the scope alone in StartUp.Auth.cs will not give the user personal information. We’ll need to use the graph api to get the data

Check this for more information

and

and then add the following nugget package

https://www.nuget.org/packages/Facebook/7.0.6

Add the following to the StartUp.Auth.cs for facebook

app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

var fbOptions = new FacebookAuthenticationOptions();

            fbOptions.Scope.Add("email");

            fbOptions.Scope.Add("public_profile");

            fbOptions.Scope.Add("user_birthday");

            fbOptions.Scope.Add("user_location");

            fbOptions.AppId = "1070612249638641";

            fbOptions.AppSecret = "5cc666e9ba9a222a3205d6585d2f867e";

            fbOptions.Provider = new FacebookAuthenticationProvider()

                OnAuthenticated = async context =>

                    context.Identity.AddClaim(new System.Security.Claims.Claim("FacebookAccessToken", context.AccessToken));

                    foreach (var claim in context.User)

                        var claimType = string.Format("urn:facebook:{0}", claim.Key);

                        var claimValue = claim.Value.ToString();

                        if (!context.Identity.HasClaim(claimType, claimValue))

                            context.Identity.AddClaim(new System.Security.Claims.Claim(claimType, claimValue, "XmlSchemaString", "Facebook"));

};

            fbOptions.SignInAsAuthenticationType = DefaultAuthenticationTypes.ExternalCookie;

            app.UseFacebookAuthentication(fbOptions);