private void pb1_DoubleClick(object sender, EventArgs e)
        {
            PictureBox pbSender     = sender as PictureBox;
            int        pbNumber     = Convert.ToInt32(pbSender.Name.ToString().Substring(2));
            Bitmap     targetBitmap = bmList[pbNumber - 1];

            ServiceTools.ShowPicture(targetBitmap);
        }