C# 对象和byte数组的互相转化（序列化）

 [Serializable]
    public class Package
    {
        /// <summary>
        /// 包类型
        /// </summary>
        public PackageType PackType { get; set; }
        /// <summary>
        /// 源IP及端口
        /// </summary>
        public string Src_IP_Port { get; set; }
        /// <summary>
        /// 目标IP及端口
        /// </summary>
        public string Desc_IP_Port { get; set; }
    }

   private void Send(Package pack, Socket s)
        {
            BinaryFormatter formatter = new BinaryFormatter();
            byte[] retbuff = new byte[1];
            using (MemoryStream mStream = new MemoryStream())
            {
                formatter.Serialize(mStream, pack);
                mStream.Flush();
                s.Send(mStream.GetBuffer(), (int)mStream.Length, SocketFlags.None);
                s.Receive(retbuff, 1, SocketFlags.OutOfBand);
                if (retbuff[0] == 0)
                {
                    Send(pack, s);
                }
            }
        }

   BinaryFormatter formatter = new BinaryFormatter();
                        using (MemoryStream mStream = new MemoryStream())
                        {
                            mStream.Write(buffer, 0, ret);
                            mStream.Flush();
                            mStream.Seek(0, SeekOrigin.Begin);
                            pack = (Package)formatter.Deserialize(mStream);
                        }