网络编程

开发平台：
C#

Form1.cs：源码内容
							﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Threading;
using System.Net.Sockets;
namespace client
{
    public partial class Form1 : Form
    {
        private IPAddress myIP = IPAddress.Parse("127.0.0.1");
        private IPEndPoint MyServer;
        private Socket sock;
        private bool flag = true;
        
        public Form1()
        {
            InitializeComponent();
        }
     
        private void targett()
        {
            Control.CheckForIllegalCrossThreadCalls = false;
            toolStripLabel1.Text = "与服务器端建立连接！";
            try
            {
                while (flag)
                {
                    byte[] r_data = new byte[64];
                    sock.Receive(r_data, r_data.Length, 0);
                    string str = System.Text.Encoding.BigEndianUnicode.GetString(r_data);                   
                    listBox1 .Items .Add (str.Substring(1, str.Length - 1) );
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
        private void sendmsg(string sendtext)
        {
             try
            {
                byte[] s_data = new byte[64];
                s_data = System.Text.Encoding.BigEndianUnicode.GetBytes(sendtext.ToCharArray ());
                sock.Send(s_data, s_data.Length, 0);
            }
            catch
            {
                MessageBox.Show("连接尚未建立！无法发送！");
            } 
        }
        private void Connect()
        {
                     try
            {
                MyServer = new IPEndPoint(myIP, 6001);
                sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                sock.Connect(MyServer);
                Thread thread = new Thread(new ThreadStart(targett));
                thread.Start();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }
        private void button1_Click(object sender, EventArgs e)
        {
            Connect();
            
        }
        private void button3_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            sendmsg(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "我说：" + richTextBox1.Text);
            listBox1.Items.Add(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "我说：" + richTextBox1.Text);
            richTextBox1.Clear();
        }
        //private void button4_Click(object sender, EventArgs e)
        //{
        //    openFileDialog1.InitialDirectory ="c:\" ;
        //    openFileDialog1.Filter = "全部文件|*.*|文本文件|*.txt";
        //    if (openFileDialog1.ShowDialog() == DialogResult.OK)
        //    {
        //      textBox1.Text = openFileDialog1.FileName;
        //      FileStream fs = new FileStream(textBox1.Text.ToString (), FileMode.OpenOrCreate);
        //      textBox2.Text = fs.Length.ToString ()+"K";            
        //    }
        //}
        //private void button5_Click(object sender, EventArgs e)
        //{
        //    Socket sensock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        //    IPEndPoint ipep  = new IPEndPoint(myIP, 6001);
        //    try
        //    {
        //        if (textBox1.Text == "")
        //        {
        //            MessageBox.Show("文件名不能为空");
        //        }
        //        else
        //        {
        //            FileStream fs = new FileStream(textBox1.Text.ToString(), FileMode.OpenOrCreate);
        //            BinaryReader r = new BinaryReader(fs);
        //            byte[] postArray = r.ReadBytes((int)fs.Length);
        //            sensock.Send(postArray);
        //        }
        //    }
        //    catch (SocketException se)
        //    {
        //        MessageBox.Show(se.Message);
        //    }
        //}
    }
}

						