private bool Same(Image image1, Image image2)

        {
            MemoryStream ms1 = new MemoryStream();
            MemoryStream ms2 = new MemoryStream();

            image1.Save(ms1, System.Drawing.Imaging.ImageFormat.Bmp);
            image2.Save(ms2, System.Drawing.Imaging.ImageFormat.Bmp);
            byte[] im1 = ms1.GetBuffer();
            byte[] im2 = ms2.GetBuffer();
            if (im1.Length != im2.Length)
                return false;
            else
            {
                for (int i = 0; i < im1.Length; i++)
                    if (im1[i] != im2[i])
                        return false;
            }
            return true;
        }