private ITcpServerEngine tcpServerEngine;
    private void button1_Click(object sender, EventArgs e)
    {
        try
        {
            //初始化並啟動服務端引擎（TCP、文字協議）
            this.tcpServerEngine = NetworkEngineFactory.CreateTextTcpServerEngine(int.Parse(this.textBox_port.Text), new DefaultTextContractHelper
 
("\0")); 
　　　　　　  this.tcpServerEngine.ClientCountChanged += new CbDelegate<int>(tcpServerEngine_ClientCountChanged);       
            this.tcpServerEngine.ClientConnected += new CbDelegate<System.Net.IPEndPoint>(tcpServerEngine_ClientConnected);
            this.tcpServerEngine.ClientDisconnected += new
 
 CbDelegate<System.Net.IPEndPoint>(tcpServerEngine_ClientDisconnected);
            this.tcpServerEngine.MessageReceived += new CbDelegate<IPEndPoint, byte[]>(tcpServerEngine_MessageReceived);
            this.tcpServerEngine.Initialize();

            this.button1.Enabled = false;
            
 
this.textBox_port.ReadOnly = true;
            this.button2.Enabled = true;
        }
        catch (Exception ee)
        {
            MessageBox.Show(ee.Message);
        }
    }

    void tcpServerEngine_MessageReceived(IPEndPoint client, byte[] bMsg)
    {
        string msg = System.Text.Encoding.UTF8.GetString(bMsg); //訊息使用UTF-8編碼
        msg = msg.Substring(0, msg.Length - 1); //將結束標記"\0"剔除
        this.ShowClientMsg(client, msg);
    }

    void tcpServerEngine_ClientDisconnected(System.Net.IPEndPoint ipe)
    {
        string msg = string.Format("{0} 下線", ipe);
        this.ShowEvent(msg);
    }

    void tcpServerEngine_ClientConnected(System.Net.IPEndPoint ipe)
    {
        string msg = string.Format("{0} 上線" ,ipe);
        this.ShowEvent(msg);
    }        

    void tcpServerEngine_ClientCountChanged(int count)
    {
        this.ShowConnectionCount(count);
    }

    private void ShowEvent(string msg)
    {
        if (this.InvokeRequired)
        {
            this.BeginInvoke(new CbDelegate<string>(this.ShowEvent), msg);
        }
        else
        {
            this.toolStripLabel_event.Text = msg;
        }
    }

    private void ShowClientMsg(IPEndPoint client, string msg)
    {
        if (this.InvokeRequired)
        {
            this.BeginInvoke(new CbDelegate<IPEndPoint,string>(this.ShowClientMsg),client, msg);
        }
        else
        {
            ListViewItem item = new ListViewItem(new string[] { DateTime.Now.ToString(), client.ToString(), msg });
            this.listView1.Items.Insert(0, item);
        }
    }

    private void ShowConnectionCount(int clientCount)
    {
        if (this.InvokeRequired)
        {
            this.BeginInvoke(new CbDelegate<int>(this.ShowConnectionCount), clientCount);
        }
        else
        {
            this.toolStripLabel_clientCount.Text = "線上數量： " + clientCount.ToString();
        }
    }

    private void comboBox1_DropDown(object sender, EventArgs e)
    {
        List<IPEndPoint> list = this.tcpServerEngine.GetClientList();
        this.comboBox1.DataSource = list;            
    }

    private void button2_Click(object sender, EventArgs e)
    {
        try
        {
            IPEndPoint client = (IPEndPoint)this.comboBox1.SelectedItem;
            if (client == null)
            {
                MessageBox.Show("沒有選中任何線上客戶端！");
                return;
            }

            if (!this.tcpServerEngine.IsClientOnline(client))
            {
                MessageBox.Show("目標客戶端不線上！");
                return;
            }

            string msg = this.textBox_msg.Text + "\0";// "\0" 表示一個訊息的結尾
            byte[] bMsg = System.Text.Encoding.UTF8.GetBytes(msg);//訊息使用UTF-8編碼
            this.tcpServerEngine.SendMessageToClient(client, bMsg);
        }
        catch (Exception ee)
        {
            MessageBox.Show(ee.Message);
        }
    }