public void AddWaterMarkTest()
        {
            Bitmap WaterMarkImg = new Bitmap(@"D:\Images\WaterMarkImg.png");
            Bitmap BackImg      = new Bitmap(@"D:\Images\banner.png");
            int    Width        = BackImg.Width - WaterMarkImg.Width;
            int    Height       = BackImg.Height - WaterMarkImg.Height - 15;

            if (Width > 0 && Height > 0)
            {
                Point  p   = new Point(Width, Height);
                Bitmap img = ImageManager.AddWaterMark(BackImg, WaterMarkImg, p);
                img.Save(@"D:\Images\test.jpg");
            }
        }