[問題] udp server

[power272000 (鴨)]

為什麼執行時無法顯示表單
表單單純接收client資料並自動回傳 現在client端可以收到server回傳東西

以下是程式碼
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System;                   //For Console, Int32,ArgumentException,Environment
using System.Net;              //IPEndPoint
using System.Net.Sockets;       //For UdpClient,SocketException

namespace WindowsApplication1
{
    public partial class udp_test : Form
    {
        public udp_test()
        {
            InitializeComponent();
            Open_udp();
        }

        public void  Open_udp()
        {
            int serverPort = 6666;
            UdpClient client = null;

            try
            {
                client = new UdpClient(serverPort);
            }
            catch (SocketException se) {
                ShowBox.AppendText(se.ErrorCode + ":" + se.Message);
                Environment.Exit(se.ErrorCode);
            }

            IPEndPoint reIPEndPoint = new IPEndPoint(IPAddress.Any, 0);

            for (; ; )
            {
                try
                {
                  byte[] byteBuffer = client.Receive(ref reIPEndPoint);
                  ShowBox.AppendText("handling client at " + reIPEndPoint +
                                                                   "-" + "\n");
                  ShowBox.AppendText(Encoding.ASCII.GetString(byteBuffer, 0,
                                                           byt\eBuffer.Length) + "\n");
                  client.Send(byteBuffer, byteBuffer.Length, reIPEndPoint);
                  ShowBox.AppendText("{0}byte"+ byteBuffer.Length);
                }
                catch (SocketException se) {
                 ShowBox.AppendText(se.ErrorCode + ":" + se.Message);
                }
            }


        }

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◆ From: 61.229.174.22
→ power272000:如果把for(;;)那段附註的話便可正常執行,請問為什麼
→ hamsters:程式卡在表單的建構子中所以沒辦法顯示
→ hamsters:即使顯示了也無法操作，請考慮使用多執行緒實作
→ power272000:謝謝
推 tomex:逐行跑看是卡在那行? 另，收封包不一定一次就會收齊.
→ power272000:要加執行緒.表單才會出現...謝謝