private async void Button_Click(object sender, RoutedEventArgs e) { var result = await EvernoteAuthenticator.AuthenticateAsync(Host.Text, Key.Text, Secret.Text, Callback.Text); TTransport noteStoreTransport = new THttpClient(new Uri(result.EdamNoteStoreUrl)); TProtocol noteStoreProtocol = new TBinaryProtocol(noteStoreTransport); var noteStore = new NoteStore.Client(noteStoreProtocol); var defaultNotebook = await Task.Run(() => noteStore.getDefaultNotebook(result.AuthToken)); Output.Text = $"Your default notebook is {defaultNotebook.Name}"; }