Image类型转为byte[]

/*功能描述：把image类型的数据转为byte[]，

* 参数：Image类型数据
* 返回值：byte[]类型数据
* */

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