สอบถามเรื่อง C# กับ WPF ครับผม สอบถามถึง การทำ SERVER และ CLIENT ครับ

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using NetComm;
using System.Windows.Threading;

namespace WPFServer
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private Host runHost = new Host(2020);
        DispatcherTimer timer;
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            runHost.onConnection += new Host.onConnectionEventHandler(runHost_onConnection);
            runHost.DataReceived += new Host.DataReceivedEventHandler(runHost_DataReceived);
            runHost.lostConnection += new Host.lostConnectionEventHandler(runHost_lostConnection);

            runHost.StartConnection();
        }

        private void runHost_onConnection(string id)
        {
            if (id == "client")
            {
                lbl_Status.Content = "Connect";
                lbl_Status.Background = Brushes.Green;
                SendTime();
            }
        }
        private void runHost_DataReceived(string id, byte[] data)
        {
            tbx_Log.Text += id + " : " + BArr2S(data);
        }

        private void runHost_lostConnection(string id)
        {
            if (id == "client")
            {
                lbl_Status.Content = "Lost Connect";
                lbl_Status.Background = Brushes.Red;
            }
        }
        private byte[] S2BArr(string data)
        {
            return ASCIIEncoding.UTF8.GetBytes(data);
        }

        private string BArr2S(byte[] data)
        {
            return ASCIIEncoding.UTF8.GetString(data);
        }

        public void SendTime()
        {
            timer = new DispatcherTimer();
            timer.Tick += new EventHandler(delegate(object s, EventArgs a)
            {
                runHost.SendData("client", S2BArr("time," + DateTime.Now.ToString()));
            });
            timer.Interval = TimeSpan.FromMilliseconds(1000);
            timer.Start();
        }

        private void btn_Send_Click(object sender, RoutedEventArgs e)
        {
            runHost.SendData("client", S2BArr("msg,"+tbx_Msg.Text));
        }

        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            if (runHost.Listening)
                runHost.CloseConnection();
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using NetComm;
using System.Windows.Threading;

namespace WPFClient
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private Client runClient = new Client();
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            runClient.Connected += new Client.ConnectedEventHandler(runClient_Connected);
            runClient.DataReceived += new Client.DataReceivedEventHandler(runClient_DataReceived);
            runClient.Disconnected += new Client.DisconnectedEventHandler(runClient_Disconnected);
        }

        private void runClient_Connected()
        {
            lbl_Status.Content = "Connect";
            lbl_Status.Background = Brushes.Green;
        }

        private void runClient_DataReceived(byte[] data, string id)
        {
            string[] lineArr = BArr2S(data).Split(',');
            if (lineArr[0] == "time")
            {
                lbl_TimeServer.Content = lineArr[1];
            }
            else
            {
                tbx_Log.Text += lineArr[1]+"\r\n";
            }
        }

        private void runClient_Disconnected()
        {
            lbl_Status.Content = "Lost Connect";
            lbl_Status.Background = Brushes.Red;
        }

        private byte[] S2BArr(string data)
        {
            return ASCIIEncoding.UTF8.GetBytes(data);
        }

        private string BArr2S(byte[] data)
        {
            return ASCIIEncoding.UTF8.GetString(data);
        }

        private void btn_Send_Click(object sender, RoutedEventArgs e)
        {
            runClient.SendData(S2BArr(tbx_Msg.Text));// to server
        }

        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            if (runClient.isConnected)
                runClient.Disconnect();
        }

        private void btn_Connect_Click(object sender, RoutedEventArgs e)
        {
            runClient.Connect(tbx_IPServer.Text,2020,"client");
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using NetComm;
using System.Windows.Threading;

namespace WPFServer
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private Host runHost = new Host(2020);//Server เปิด port 2020
        DispatcherTimer timer;
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            runHost.onConnection += new Host.onConnectionEventHandler(runHost_onConnection);        //Event เมื่อมี client เชื่อมต่อเข้ามา ไปดูที่ funtion runHost_onConnection
            runHost.DataReceived += new Host.DataReceivedEventHandler(runHost_DataReceived);        // Event เมื่อมี Client ส่งข้อมูลมา ไปดูที่ funtion runHost_DataReceived
            runHost.lostConnection += new Host.lostConnectionEventHandler(runHost_lostConnection);  //Event เมื่อ Client ออกจากระบบ ไปดูที่ funtion runHost_lostConnection

            runHost.StartConnection();// ทำการเปิด Server 
        }

        private void runHost_onConnection(string id)//เมื่อมี Client เชื่อมต่อมา จะส่ง id ของ Client มา function นี้
        {
            if (id == "client")
            {
                lbl_Status.Content = "Connect";
                lbl_Status.Background = Brushes.Green;
                SendTime();
            }
        }
        private void runHost_DataReceived(string id, byte[] data)//เมื่อ Client ส่งข้อมูลมา id คือใครส่งมา เเละ data คือข้อมมูลที่ส่ง
        {
            tbx_Log.Text += id + " : " + BArr2S(data);//แปลง byte[] เป็น string โดยส่ง data ไป
        }

        private void runHost_lostConnection(string id)// เมื่อ Client หลุด id คือชื่อของ Client ที่หลุด
        {
            if (id == "client")
            {
                lbl_Status.Content = "Lost Connect";
                lbl_Status.Background = Brushes.Red;
            }
        }
        private byte[] S2BArr(string data)//แปลง String เป็น Byte[] 
        {
            return ASCIIEncoding.UTF8.GetBytes(data);
        }

        private string BArr2S(byte[] data)//แปลง Byte[] เป็น String 
        {
            return ASCIIEncoding.UTF8.GetString(data);
        }

        public void SendTime()//ใช้ Timer ส่งเวลาไปยัง Server ทุก 1 ms
        {
            timer = new DispatcherTimer();
            timer.Tick += new EventHandler(delegate(object s, EventArgs a)
            {
                runHost.SendData("client", S2BArr("time," + DateTime.Now.ToString()));//SendData("ส่งถึงใคร",S2BArr("ส่งข้อมูลอะไรไป"))
            });
            timer.Interval = TimeSpan.FromMilliseconds(1000);//ส่ง 1 ms
            timer.Start();
        }

        private void btn_Send_Click(object sender, RoutedEventArgs e)
        {
            runHost.SendData("client", S2BArr("msg," + tbx_Msg.Text));//SendData("ส่งถึงใคร",S2BArr("ส่งข้อมูลอะไรไป"))
        }

        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            if (runHost.Listening)
                runHost.CloseConnection();
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using NetComm;
using System.Windows.Threading;

namespace WPFClient
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        private Client runClient = new Client();
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            runClient.Connected += new Client.ConnectedEventHandler(runClient_Connected);//Event เมื่อเชื่อมต่อ server สำเร็จ
            runClient.DataReceived += new Client.DataReceivedEventHandler(runClient_DataReceived);//Event เมื่อมีข้อมูลส่งเข้ามา
            runClient.Disconnected += new Client.DisconnectedEventHandler(runClient_Disconnected);//Event เมื่อหลุดการเชื่อมต่อ
        }

        private void runClient_Connected()//เมื่อเชื่อมต่อสำเร็จจะทำอะไร
        {
            lbl_Status.Content = "Connect";
            lbl_Status.Background = Brushes.Green;
        }

        private void runClient_DataReceived(byte[] data, string id)//เมื่อมีข้อมูลส่งมา
        {
            //รูปแบบการส่งจาก server = time,18/12/2554 14:32:01
            string[] lineArr = BArr2S(data).Split(',');//จับตัว , เเละ lineArr[0] มันจะ = time เเละ lineArr[1] = 18/12/2554 14:32:01
            if (lineArr[0] == "time")
            {
                lbl_TimeServer.Content = lineArr[1];
            }
            else
            {
                tbx_Log.Text += lineArr[1]+"\r\n";
            }
        }

        private void runClient_Disconnected()//เมื่อหลุดการเชื่อมต่อ
        {
            lbl_Status.Content = "Lost Connect";
            lbl_Status.Background = Brushes.Red;
        }

        private byte[] S2BArr(string data)//แปลง String เป็น Byte[]
        {
            return ASCIIEncoding.UTF8.GetBytes(data);
        }

        private string BArr2S(byte[] data)//แปลง Byte[] เป็น String
        {
            return ASCIIEncoding.UTF8.GetString(data);
        }

        private void btn_Send_Click(object sender, RoutedEventArgs e)
        {
            runClient.SendData(S2BArr(tbx_Msg.Text));// to server
        }

        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            if (runClient.isConnected)
                runClient.Disconnect();
        }

        private void btn_Connect_Click(object sender, RoutedEventArgs e)
        {
            runClient.Connect(tbx_IPServer.Text, 2020, "client");//เชื่อมต่อกับ server sample = .Connect("server IP อะไร", port อะไร , "ชื่อClient ของคุณ")
        }
    }
}