怎么在C#中使用Socket实现局域网聊天
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先运行一个java写的局域网聊天,效果图如下
后使用c#图形修改如下:
C#代码:
servlet服务端
using System; using System.Collections.Generic; using System.Drawing; using System.Windows.Forms; using System.Net; using System.Net.Sockets; using System.Threading; using System.IO; using System.Text; using System.Text.RegularExpressions; namespace Server { public partial class MainForm : Form { private TcpListener listener; private DictionarysocketList; private bool tag = true; private StringBuilder charList; public MainForm() { InitializeComponent(); Control.CheckForIllegalCrossThreadCalls = false; } void Bu_StartClick(object sender, EventArgs e) { cb_chatList.Items.Clear(); selectChat.Text=""; int port = 8888; //创建服务端,并且启动 try{ listener = new TcpListener(IPAddress.Parse(ipAddress()),port); listener.Start(); bu_Start.Enabled = false; bu_stop.Enabled = true; }catch(Exception ex) { MessageBox.Show("服务器启动失败, 原因:"+ex.Message); bu_Start.Enabled = true; bu_stop.Enabled = false; return; } selectChat.Text = "服务器启动成功,访问IP:"+ipAddress()+" 端口号:"+port; //记录住连接的客户端 socketList = new Dictionary (); charList = new StringBuilder(); //使用多线程,用于多个客户端接入 Thread th = new Thread(new ThreadStart(executeTask)); th.Start(); } public void executeTask() { while(tag) { //等待用户连接 TcpClient client = null; try{ client = listener.AcceptTcpClient(); }catch(Exception) { } Thread th = new Thread(executeRead); th.Start((Object)client); } } public void executeRead(Object pamars) { //永久监听读取客户端 TcpClient client = pamars as TcpClient; while(tag) { NetworkStream ns = client.GetStream(); StreamReader sr = new StreamReader(ns); String msg = String.Empty; String people = String.Empty; try { msg = sr.ReadLine(); if(msg.IndexOf(" ")!=-1) { msg = Regex.Split(msg,"=")[1]; cb_chatList.Items.Add(msg); charList.Append(msg).Append("<@>"); socketList.Add(msg,client); msg = "
欢迎【"+msg+"】光临
"; } selectChat.AppendText(msg.Replace("
","\r\n")); sendMsg(String.Empty,msg); } catch (Exception) { //MessageBox.Show(ex.Message.ToString()); break; } } } public void sendMsg(String target,String msg) { if(String.Empty!=target) { TcpClient client = socketList[target]; StreamWriter sw = new StreamWriter(client.GetStream()); sw.WriteLine(msg); sw.Flush(); }else{ Dictionary.KeyCollection keyColl = socketList.Keys; foreach (String name in keyColl) { StreamWriter sw = new StreamWriter(socketList[name].GetStream()); sw.WriteLine(msg+"<@=@>"+charList.ToString()); sw.Flush(); } } } /*根据计算名获取IP地址*/ public String ipAddress() { IPAddress[] address = DNS.GetHostAddresses(Dns.GetHostName()); return address[2].ToString(); } void ServerFromFormClosing(object sender, FormClosingEventArgs e) { e.Cancel = false; if(tag) tag = false; if(listener!=null) listener.Stop(); } void Bu_stopClick(object sender, EventArgs e) { bu_Start.Enabled = true; bu_stop.Enabled = false; if(tag) tag = false; if(listener!=null) listener.Stop(); } } }
Client客户端
using System; using System.Drawing; using System.Windows.Forms; using System.Threading; using System.Net; using System.Net.Sockets; using System.IO; using System.Text; using System.Text.RegularExpressions; namespace Client { public partial class MainForm : Form { private System.Windows.Forms.Timer closeWindowTimer; private StreamReader sr; private StreamWriter sw; private TcpClient tc; private ClientLong cl; private bool tag = true; public MainForm(TcpClient tcp,ClientLong clo) { cl = clo; tc = tcp; InitializeComponent(); Control.CheckForIllegalCrossThreadCalls = false; bu_simple.Hide(); } void ClientFromLoad(object sender, EventArgs e) { PiayCheckedChanged(); } /*事件方法*/ public void PiayCheckedChanged() { closeWindowTimer = new System.Windows.Forms.Timer(); closeWindowTimer.Interval = 1000; closeWindowTimer.Tick += new EventHandler(theout); closeWindowTimer.Start(); } /*执行的事件*/ public void theout(object source, EventArgs e) { //这里单独开一个线程用来显示信息 try{ Thread t1 = new Thread(new ThreadStart(readMsg)); t1.Start(); }catch(Exception) { } } void readMsg() { if(tag && tc!=null){ sr = new StreamReader(tc.GetStream()); String msg = sr.ReadLine(); String[] address = Regex.Split(msg,"<@=@>"); chatText.AppendText(address[0].Replace("
","\r\n")); address = Regex.Split(address[1],"<@>"); cb_chatList.Items.Clear(); foreach (String s in address) { if(!String.IsNullOrEmpty(s) && s != cl.clientName) cb_chatList.Items.Add(s); } } } void Button1Click(object sender, EventArgs e) { if(String.IsNullOrEmpty(textBox2.Text)){ MessageBox.Show("请输入消息");return; } sw = new StreamWriter(tc.GetStream()); sw.WriteLine("
"+cl.clientName+" "+DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")+"
"+textBox2.Text); textBox2.Text = ""; sw.Flush(); } void Bu_exitClick(object sender, EventArgs e) { MainFormFormClosing(null,null); } void Button2Click(object sender, EventArgs e) { chatText.Text = ""; } void MainFormFormClosing(object sender, FormClosingEventArgs e) { closeWindowTimer.Stop(); cl.Close(); tag = false; if(sr!=null) sr.Close(); if(sw!=null) sw.Close(); } void Bu_simpleClick(object sender, EventArgs e) { String selected = cb_chatList.Text; if(selected==null) { MessageBox.Show("请选择单聊对象"); return; } } } }
C#是什么
C#是一个简单、通用、面向对象的编程语言,它由微软Microsoft开发,继承了C和C++强大功能,并且去掉了一些它们的复杂特性,C#综合了VB简单的可视化操作和C++的高运行效率,以其强大的操作能力、优雅的语法风格、创新的语言特性和便捷的面向组件编程从而成为.NET开发的首选语言,但它不适用于编写时间急迫或性能非常高的代码,因为C#缺乏性能极高的应用程序所需要的关键功能。
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