本文实例为大家分享了c#使用socket实现局域网聊天的具体代码，供大家参考，具体内容如下
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
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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 dictionary<string,tcpclient> socketlist;
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<string,tcpclient>();
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("<clientname>")!=-1)
{
msg = regex.split(msg,"=")[1];
cb_chatlist.items.add(msg);
charlist.append(msg).append("<@>");
socketlist.add(msg,client);
msg = "<br>欢迎【"+msg+"】光临<br>";
}
selectchat.appendtext(msg.replace("<br>","\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<string,tcpclient>.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();
}
}
}
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client客户端
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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("<br>","\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("<br>"+cl.clientname+" "+datetime.now.tostring("yyyy-mm-dd hh:mm:ss")+"<br> "+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;
}
}
}
}
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补充：
1.上传下载文件、聊天表情、私聊、踢人.......都是可以扩展的功能。
只是目前还没有可执行的思路，希望有相同爱好者多多提出宝贵意见，我会继续关注。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/hubiao_0618/article/details/35796919