本文实例为大家分享了C#实现简易多人聊天室的具体代码，供大家参考，具体内容如下
只有一个群聊的功能
服务端
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace FinalChatRoomClient
{
public partial class Client : Form
{
//客户端负责接收服务端发来的数据消息的线程
Thread threadClient = null;
//创建客户端套接字，负责连接服务器
Socket socketClient = null;
public Client()
{
InitializeComponent();
//关闭对文本框跨线程操作的检查
TextBox.CheckForIllegalCrossThreadCalls = false;
}
private void start_Click(object sender, EventArgs e)
{
//获得文本框中的IP地址对象
IPAddress address = IPAddress.Parse(txtIp.Text.Trim());
//创建包含IP和端口的网络节点对象
IPEndPoint endPoint = new IPEndPoint(address, int.Parse(txtPort.Text.Trim()));
//创建客户端套接字，负责连接服务器
socketClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
//客户端连接到服务器
socketClient.Connect(endPoint);
ShowMsg("客户端连接服务器成功");
}
catch (SocketException ex)
{
ShowMsg("客户端连接服务器发生异常：" + ex.Message);
}
catch (Exception ex)
{
ShowMsg("客户端连接服务器发生异常：" + ex.Message);
}
threadClient = new Thread(ReceiveMsg);
threadClient.IsBackground = true;
threadClient.Start();
}
private void btnSend_Click(object sender, EventArgs e)
{
string strMsg = txtMsg.Text.Trim();
//将字符串转成方便网络传送的二进制数组
byte[] arrMsg = Encoding.UTF8.GetBytes(strMsg);
byte[] arrMsgSend = new byte[arrMsg.Length + 1];
arrMsgSend[0] = 0;//设置标识位，0代表发送的是文字
Buffer.BlockCopy(arrMsg, 0, arrMsgSend, 1, arrMsg.Length);
try
{
socketClient.Send(arrMsgSend);
//清空发送消息文本框中的消息
this.txtMsg.Text = "";
}
catch (SocketException ex)
{
ShowMsg("客户端发送消息时发生异常：" + ex.Message);
}
catch (Exception ex)
{
ShowMsg("客户端发送消息时发生异常：" + ex.Message);
}
}
private void ShowMsg(string msg)
{
txtRecord.AppendText(msg + "\r\n");
}
private void ReceiveMsg()
{
while (true)
{
//定义一个接收消息用的字节数组缓冲区（2M大小）
byte[] arrMsgRev = new byte[1024 * 1024 * 2];
//将接收到的数据存入arrMsgRev,并返回真正接收到数据的长度
int length = -1;
try
{
length = socketClient.Receive(arrMsgRev);
}
catch (SocketException ex)
{
ShowMsg("客户端接收消息时发生异常：" + ex.Message);
break;
}
catch (Exception ex)
{
MessageBox.Show("客户端接收消息时发生异常：" + ex.Message);
break;
}
//此时是将数组的所有元素（每个字节）都转成字符串，而真正接收到只有服务端发来的几个字符
string strMsgReceive = Encoding.UTF8.GetString(arrMsgRev, 0, length);
Console.WriteLine(strMsgReceive);
ShowMsg(strMsgReceive);
}
}
}
}
客户端
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace FinalChatRoomClient
{
public partial class Client : Form
{
//客户端负责接收服务端发来的数据消息的线程
Thread threadClient = null;
//创建客户端套接字，负责连接服务器
Socket socketClient = null;
public Client()
{
InitializeComponent();
//关闭对文本框跨线程操作的检查
TextBox.CheckForIllegalCrossThreadCalls = false;
}
private void start_Click(object sender, EventArgs e)
{
//获得文本框中的IP地址对象
IPAddress address = IPAddress.Parse(txtIp.Text.Trim());
//创建包含IP和端口的网络节点对象
IPEndPoint endPoint = new IPEndPoint(address, int.Parse(txtPort.Text.Trim()));
//创建客户端套接字，负责连接服务器
socketClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
try
{
//客户端连接到服务器
socketClient.Connect(endPoint);
ShowMsg("客户端连接服务器成功");
}
catch (SocketException ex)
{
ShowMsg("客户端连接服务器发生异常：" + ex.Message);
}
catch (Exception ex)
{
ShowMsg("客户端连接服务器发生异常：" + ex.Message);
}
threadClient = new Thread(ReceiveMsg);
threadClient.IsBackground = true;
threadClient.Start();
}
private void btnSend_Click(object sender, EventArgs e)
{
string strMsg = txtMsg.Text.Trim();
//将字符串转成方便网络传送的二进制数组
byte[] arrMsg = Encoding.UTF8.GetBytes(strMsg);
byte[] arrMsgSend = new byte[arrMsg.Length + 1];
arrMsgSend[0] = 0;//设置标识位，0代表发送的是文字
Buffer.BlockCopy(arrMsg, 0, arrMsgSend, 1, arrMsg.Length);
try
{
socketClient.Send(arrMsgSend);
//清空发送消息文本框中的消息
this.txtMsg.Text = "";
}
catch (SocketException ex)
{
ShowMsg("客户端发送消息时发生异常：" + ex.Message);
}
catch (Exception ex)
{
ShowMsg("客户端发送消息时发生异常：" + ex.Message);
}
}
private void ShowMsg(string msg)
{
txtRecord.AppendText(msg + "\r\n");
}
private void ReceiveMsg()
{
while (true)
{
//定义一个接收消息用的字节数组缓冲区（2M大小）
byte[] arrMsgRev = new byte[1024 * 1024 * 2];
//将接收到的数据存入arrMsgRev,并返回真正接收到数据的长度
int length = -1;
try
{
length = socketClient.Receive(arrMsgRev);
}
catch (SocketException ex)
{
ShowMsg("客户端接收消息时发生异常：" + ex.Message);
break;
}
catch (Exception ex)
{
MessageBox.Show("客户端接收消息时发生异常：" + ex.Message);
break;
}
//此时是将数组的所有元素（每个字节）都转成字符串，而真正接收到只有服务端发来的几个字符
string strMsgReceive = Encoding.UTF8.GetString(arrMsgRev, 0, length);
Console.WriteLine(strMsgReceive);
ShowMsg(strMsgReceive);
}
}
}
}
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脚本之家。