FirebaseAuthSignIn.cs

// anonymous sign in
var user = await client.SignInAnonymouslyAsync();

// sign up or sign in with email and password
var userCredential = await client.CreateUserWithEmailAndPasswordAsync("email", "pwd", "Display Name");
var userCredential = await client.SignInWithEmailAndPasswordAsync("email", "pwd");

// sign in via provider specific AuthCredential
var credential = TwitterProvider.GetCredential("access_token", "oauth_token_secret");
var userCredential = await client.SignInWithCredentialAsync(credential);

// sign in via web browser redirect - navigate to given uri, monitor a redirect to 
// your authdomain.firebaseapp.com/__/auth/handler
// and return the whole redirect uri back to the client;
// this method is actually used by FirebaseUI
var userCredential = await client.SignInWithRedirectAsync(provider, async uri =>
{    
    return await OpenBrowserAndWaitForRedirectToAuthDomain(uri);
});

please help me!
How to login firebase authentication (not realtime database)

Can you share 1 source code?
my email: [email protected]