Image 转 byte[]

private byte[] imageToBytes(Image image)
        {
            System.IO.MemoryStream Ms = new MemoryStream();
            image.Save(Ms, System.Drawing.Imaging.ImageFormat.Jpeg);
            byte[] img = new byte[Ms.Length];
            Ms.Position = 0;
            Ms.Read(img, 0, Convert.ToInt32(Ms.Length));
            Ms.Close();
            return img;
        }