private void AlignHorizontally(HorizontalAlignment alignment)
 {
     var aligner = new Aligner(DesignSurface.GetSelectedCanvasItems());
     aligner.AlignHorizontally(alignment);
 }
        private void AlignHorizontally(HorizontalAlignment alignment)
        {
            var aligner = new Aligner(DesignSurface.GetSelectedCanvasItems());

            aligner.AlignHorizontally(alignment);
        }