private async void OAuth2Authenticator_Completed(object sender, AuthenticatorCompletedEventArgs e) { if (e.IsAuthenticated) { try { await SecureStorage.SetAsync(OAuth2ProviderType.ToString(), JsonConvert.SerializeObject(e.Account.Properties)); } catch (Exception ex) { Debug.WriteLine(ex.Message); } string email = string.Empty; switch (OAuth2ProviderType) { case OAuth2ProviderType.NONE: break; case OAuth2ProviderType.TRADITIONAL: break; case OAuth2ProviderType.FACEBOOK: email = await ProviderService.GetFacebookEmailAsync(); break; case OAuth2ProviderType.GOOGLE: email = await ProviderService.GetGoogleEmailAsync(); break; case OAuth2ProviderType.MICROSOFT: email = await ProviderService.GetMicrosoftEmailAsync(); break; } await SecureStorage.SetAsync("Email", email); await SecureStorage.SetAsync("Provider", OAuth2ProviderType.ToString()); await Application.Current.MainPage.Navigation.PushModalAsync(new MainPage()); } else { oAuth2Authenticator.OnCancelled(); oAuth2Authenticator = default(OAuth2Authenticator); } }