public static byte[] GetBinaryFormatDataSet(DataSet ds)        {            byte[] binaryResult = null;            //创建内存流            using (MemoryStream memStream = new MemoryStream())            {                //产生二进制序列化格式                IFormatter formatter = new BinaryFormatter();                //指定DataSet串行化格式是二进制                ds.RemotingFormat = SerializationFormat.Binary;                //串行化到内存中                formatter.Serialize(memStream, ds);                //将DataSet转化成byte[]                binaryResult = memStream.ToArray();                //清空和释放内存流                memStream.Close();                memStream.Dispose();            }            return binaryResult;        }

        public static DataSet RetrieveDataSet(byte[] binaryData)        {            DataSet ds = null;            //创建内存流            using (MemoryStream memStream = new MemoryStream(binaryData))            {                memStream.Seek(0, SeekOrigin.Begin);                //产生二进制序列化格式                IFormatter formatter = new BinaryFormatter();                //反串行化到内存中                object obj = formatter.Deserialize(memStream);                //类型检验                if (obj is DataSet)                {                    ds = (DataSet)obj;                }            }            return ds;        }    

string msg = "Message from server at " + DateTime.Now.ToString();byte[] buffer = Encoding.Unicode.GetBytes(msg);

byte[] buffer = new byte[1024];string message = Encoding.Unicode.GetString(buffer, 0, length);