private void Button_Click_2(object sender, RoutedEventArgs e)
        {
            ContainersWithHeaders page = new ContainersWithHeaders();

            myFrame.NavigationService.Navigate(page);
        }
 private void Button_Click_2(object sender, RoutedEventArgs e)
 {
     ContainersWithHeaders page = new ContainersWithHeaders();
     myFrame.NavigationService.Navigate(page);
 }