private async void AuthenticatCredentials(string name, string passphrase) { AuthenticateHandler auth = new AuthenticateHandler(); auth.Name = name; auth.Password = passphrase; string response = auth.Validate(); if (response.Contains("The user")) { await main.ShowMessageAsync("Non-existant User", response); } else if (response.Contains("Incorrect")) { await main.ShowMessageAsync("Incorrect Password", response); } else { await main.ShowMessageAsync("Successful login", response); string token = auth.RetrieveAccessToken(); SuccessfulLoginAsync(token); } }