How can I invoke callback while login in Google in .net core? - asp.net-core

Question

I am coding a third-party login-in with Google.
Here is the tutorial of Microsoft:
https://learn.microsoft.com/en-us/aspnet/core/security/authentication/social/google-logins?view=aspnetcore-3.0
I did what it said by using the Secret Manager and AddAuthentication
When I click the Login button on the website, it will redirect to google login successfully.
Now the next step is the invoke the callback. However, I don't know how to invoke it after login.
The tutorial of Microsoft only shows these two class:
https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.authentication.google.googleoptions?view=aspnetcore-2.2
https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.authentication.remoteauthenticationoptions.callbackpath?view=aspnetcore-2.2
But does not say something more about that yet. I even don't know how to use it and I can't find any other tutorial about it.
Would you please tell me how can I invoke the callback? Thank you.

Answer 1

You can use like below. Login user on External login method then get the result with confirmlogin method.
[HttpGet]
public async Task<object> ExternalLogin()
{
string redirectUrl = "api/account/ConfirmLogin&Provider=Google";
await AuthenticationProperties properties =
SignInManager.ConfigureExternalAuthenticationProperties("Google", redirectUrl);
return new ChallengeResult(provider, properties);
}
[HttpGet]
public async Task ConfirmLoginAsync(string Provider)
{
/*
make your checks
*/
Request.HttpContext.Response.Redirect(url);
}
Also you need to register your url like :
registerUrl
I hope it helps.