将TCP数据发送到C#中的特定TcpClient

我收到一个错误，TcpClient未连接，无法将信息发送到未激活的套接字。我想知道这个代码出了什么问题？错误：在未连接的套接字上不允许使用这种类型的连接。

SERVER:
public List<TcpClient> clients = new List<TcpClient>();
  On client connection:
  Socket s = currClient.Client;
  clients.Add(currClient.Client);
When Sending Client Info
   Stream sendData = clients[0].GetStream();
        ASCIIEncoding text = new ASCIIEncoding();
        byte[] clientInfoByte = text.GetBytes("msg");
        sendData.Write(clientInfoByte, 0, clientInfoByte.Length);
        sendData.Close();

客户端：

        Thread thr = new Thread(commands);
        thr.Start();
    }
    public static void commands()
    {
        Stream cmds = me.GetStream();
        while (true)
        {
            byte[] b = new byte[100];
            Socket s = me.Client;
            int k = s.Receive(b);
            string ClientInfo = "";
            string command = System.Text.Encoding.ASCII.GetString(b);
            if (command == "msg")
            {
                MessageBox.Show("Command Recieved!");
            }
        }
    }

listener.BeginAcceptTcpClient(
    new AsyncCallback(DoAcceptTcpClientCallback), 
    listener);

// Process the client connection.       
public static void DoAcceptTcpClientCallback(IAsyncResult ar) 
{
    TcpListener listener = (TcpListener) ar.AsyncState;
    TcpClient client = listener.EndAcceptTcpClient(ar);
    //add to your client list
    clients.Add(client);
  }