C#简单聊天程序

假如有服务器端程序,ChatServer和客户端程序ChatClient.实现客户端向服务器端发送信息的简单功能.

运行步骤,

1.先是服务器端start listen,

2.然后客户端connect.

3.客户端发送消息

只要服务器端start listen了,然后客户端也connect了.这样建立起连接后.接受发送信息就方便了,只要用writer,reader去操作NetworkStream

创建一个WinForm页面

引用命名空间:

using System.Net.Sockets;

using System.Net;

using System.IO;

using System.Threading;

public class ChatServer

{

private int port = 54321; //端口号

private IPAddress ip = IPAddress.Parse("10.20.30.40"); //ip地址

private TcpListener tcpListener= null;

private TcpClient tcpClient = null;

private NetworkStream networkStream = null;

private BinaryReader reader;

//private BinaryWriter writer;

private string getInfo = string.empty;

//开始监听

private void btnStartListen_Click(object sender, EventArgs e)

{

tcpListener= new TcpListener( ip , port);

tcpListener.Start(); //开始监听

Thread acceptClientMsgThread= new Thread(AcceptClientMsg); //运行一个线程去处理客户端发来的信息

acceptClientMsgThread.Start();

}

//处理客户端发来的信息

private void AcceptClientMsg()

{

tcpClient = tcpListener.AcceptTcpClient();

if( tcpClient != null)

{

networkStream = tcpClient.GetStream();

reader = new BinaryReader( networkStream);

while (true){

getInfo += reader.ReadString(); //读取客户端发来的信息

}

}

}

//假如还要显示信息的话,可以整个显示按钮(当然最好的办法是用些线程)

//然后点击button后让信息显示出来txtShowClientMsg.Text = getInfo;

//如果服务器端想再给客户端发信息,就可以整个发送按钮.然后添加如下代码

//string sendMsg = txtSendMsge.Text;

//writer = new BinaryWriter( networkStream);

//writer.write( sendMsg);

}

using System.Net.Sockets;

using System.Net;

using System.IO;

using System.Threading;

public class ChatClient

{

private int port = 54321;

private IPAddress ip = IPAddress.Parse("10.20.30.40");

private TcpClient tcpClient = null;

private NetworkStream networkStream = null;

//private BinaryReader reader;

private BinaryWriter writer;

//连接server

private void btnStartConnect_Click(object sender, EventArgs e)

{

tcpClient = new TcpClient();

tcpClient.Connect( ip, port);

networkStream = tcpClient.GetStream();

}

//发送信息

private void btnStartConnect_Click(object sender, EventArgs e)

{

string sendMsg = txtSendMsg.Text;

writer = new BinaryWriter( networkStream);

writer.Write( sendMsg); //发送信息

}

//如果还要接受server的消息的话.

//reader = new BinaryReader( networkStream);

//string getInfo = reader.ReadString();

}