How to send object back out to all clients

class TcpServer
    {
        private TcpListener _server;
        private Boolean _isRunning;

        public TcpServer(int port)
        {
            _server = new TcpListener(IPAddress.Any, port);
            _server.Start();

            _isRunning = true;

            LoopClients();
        }

        public void LoopClients()
        {
            while (_isRunning)
            {
                // wait for client connection
                TcpClient newClient = _server.AcceptTcpClient();
                // client found.
                // create a thread to handle communication
                Thread t = new Thread(new ParameterizedThreadStart(HandleClient));
                t.Start(newClient);
            }
        }

        public void HandleClient(object obj)
        {
            // retrieve client from parameter passed to thread
            TcpClient client = (TcpClient)obj;
            // sets two streams
            StreamWriter sWriter = new StreamWriter(client.GetStream(), Encoding.ASCII);
            StreamReader sReader = new StreamReader(client.GetStream(), Encoding.ASCII);
            // you could use the NetworkStream to read and write, 
            // but there is no forcing flush, even when requested
            Boolean bClientConnected = true;
            Person p = null;
            while (bClientConnected)
            {
                try
                {
                    // reads from stream
                    //Here if I wanted I could get the object back
                    //But I want to send this object back out to all clients
                    //NetworkStream strm = client.GetStream();
                    //IFormatter formatter = new BinaryFormatter();
                    //p = (Person)formatter.Deserialize(strm); // you have to cast the deserialized object
                    //strm.Close();
                    // shows content on the console.
                    //Console.WriteLine("New person object: First name > " + p.FirstName);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
               
            }
        }
    }