Herald.MainPage.Logout_Click C# (CSharp) Метод

        private async void Logout_Click(object sender, RoutedEventArgs e)
        {
            int res=await app.User.Deauth();
            Windows.Storage.ApplicationDataContainer localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
            localSettings.Values.Clear();
                FileSystem.Delete("GPAList");
                FileSystem.Delete("CurriculumList");
                FileSystem.Delete("SRTPList");
                FileSystem.Delete("LibList");
                FileSystem.Delete("LectureList");
            Frame.Navigate(typeof(UserLogin));
        }