private void bCreateShape_Click(object sender, RoutedEventArgs e)
        {
            shapeStackPanel.Children.Clear();

            TextBlock text1 = new TextBlock();

            // text1.Text = "The bad way :";
            text1.Text = StringProvider.ShapeDemo_TheBadWay;
            text1.HorizontalAlignment = System.Windows.HorizontalAlignment.Center;
            shapeStackPanel.Children.Add(text1);

            // The bad way...
            Checkerboard checkerboard1 = new Checkerboard();

            checkerboard1.Margin          = new Thickness(5.0);
            checkerboard1.Width           = 400;
            checkerboard1.Height          = 160;
            checkerboard1.Fill            = new SolidColorBrush(Colors.Red);
            checkerboard1.Stroke          = new SolidColorBrush(Colors.Blue);
            checkerboard1.StrokeThickness = 1.0;
            checkerboard1.RowCount        = 4;
            checkerboard1.ColumnCount     = 10;
            checkerboard1.CellLength      = 40;
            shapeStackPanel.Children.Add(checkerboard1);

            TextBlock text2 = new TextBlock();

            // text2.Text = "The good way :";
            text2.Text = StringProvider.ShapeDemo_TheGoodWay;
            text2.HorizontalAlignment = System.Windows.HorizontalAlignment.Center;
            shapeStackPanel.Children.Add(text2);

            // The good way !
            Checkerboard checkerboard2 = new Checkerboard();

            checkerboard2.Margin          = new Thickness(5.0);
            checkerboard2.Width           = 400;
            checkerboard2.Height          = 160;
            checkerboard2.Fill            = new SolidColorBrush(Colors.Orange);
            checkerboard2.Stroke          = new SolidColorBrush(Colors.Black);
            checkerboard2.StrokeThickness = 1.0;
            checkerboard2.BeginInit();
            try
            {
                checkerboard2.RowCount    = 4;
                checkerboard2.ColumnCount = 10;
                checkerboard2.CellLength  = 40;
            }
            finally
            {
                checkerboard2.EndInitAndBuildContent();
            }
            shapeStackPanel.Children.Add(checkerboard2);
        }