Putting multiple elements into buttons

The following program creates a single button, but the button contains a StackPanel that has four children: an Image, a Label, and two Polyline objects. (Polyline inherits from Shape.)

Title = "Design a Button";

   // Create a Button as content of the

   Button  btn = new Button();
   btn.HorizontalAlignment =HorizontalAlignment.Center;
   btn.VerticalAlignment =VerticalAlignment.Center;
   btn.Click += ButtonOnClick;
   Content = btn;

   // Create a StackPanel as content of button
   StackPanel  stack =  new StackPanel();
   btn.Content = stack;

   // Add  a Polyline  to the  StackPanel.
   stack.Children.Add(ZigZag(10));

   // Add an Image to the StackPanel.
   Uri uri = new Uri("pack://application:,,books.ICO");  // 32-pixels
   BitmapImage  bitmap = new BitmapImage(uri);
   Image img = new Image();
   img.Margin = new Thickness(0, 10, 0, 0);
   img.Source = bitmap;
   img.Stretch = Stretch.None;
   stack.Children.Add(img);

   // Add a Label to the StackPanel.
   Label lbl = new Label();
   lbl.Content  = "_Read books!";
   lbl.HorizontalContentAlignment =HorizontalAlignment.Center;
   stack.Children.Add(lbl);

   // Add  another Polyline to the stackpanel
   stack.Children.Add(ZigZag(0));

}

Polyline ZigZag(int offset)
{
   Polyline poly = new Polyline();
   poly.Stroke = SystemColors.ControlTextBrush;
   poly.Points = new PointCollection();

   for (int x = 0; x <= 100; x += 10)
       poly.Points.Add(new Point(x, (x +offset)% 20));
    return  poly;
}

void ButtonOnClick(object sender,RoutedEventArgs args)
{
   MessageBox.Show("The button  has  been clicked", Title);
}