即时聊天工具

最新推荐文章于 2024-05-12 10:03:36 发布

原创最新推荐文章于 2024-05-12 10:03:36 发布 · 1.2k 阅读

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文章标签：

#聊天 #工具 #thread #object #string #byte

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本文介绍了一个简单的聊天室应用程序的实现，包括客户端和服务端的代码示例。客户端能够连接到指定IP的服务端进行消息收发，并通过TCP协议完成通信。

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聊天室客户端：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;
using System.IO;
using System.Threading;

namespace WindowsFormsApplication4
{
    public partial class Form1 : Form
    {
        public Form1()                     
        {
            InitializeComponent();
            Thread thread = new Thread(new ThreadStart(Listen));
            thread.Start();
           
        }

        /// <summary>
        /// 发送事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSend_Click(object sender, EventArgs e)
        {
            if (this.txtSendContent.Text == "")
            {
                MessageBox.Show("发送内容不能为空！");
                return;
            }
            this.lbSendContent.Items.Add("客户端说：" + this.txtSendContent.Text);

            TcpClient tcpclient = new TcpClient();
            tcpclient.Connect(IPAddress.Parse("192.168.0.187"), 9999);
            NetworkStream ns = tcpclient.GetStream();
            if (ns.CanWrite)
            {
                Byte[] sendBytes = Encoding.UTF8.GetBytes(this.txtSendContent.Text);
                ns.Write(sendBytes, 0, sendBytes.Length);
            }
            else
            {
                tcpclient.Close();
                ns.Close();
                return;
            }
            ns.Close();
            tcpclient.Close();
        }

        /// <summary>
        /// 修改显示委托
        /// </summary>
        /// <param name="text"></param>
        protected delegate void UpdateDisplayDelegate(string text);

        /// <summary>
        /// 监听方法
        /// </summary>
        public void Listen()
        {
            IPAddress ipAddress = IPAddress.Any;
            TcpListener tcpl = new TcpListener(ipAddress, 9998);
            tcpl.Start();
            while (true)
            {
                TcpClient tcpclient = tcpl.AcceptTcpClient();
                NetworkStream ns = tcpclient.GetStream();
                StreamReader sr = new StreamReader(ns);
                Invoke(new UpdateDisplayDelegate(UpdateDisplay), new object[] { sr.ReadToEnd() });
                tcpclient.Close();
            }
            //tcpl.Stop();
        }

        /// <summary>
        /// 赋值给ListBox控件
        /// </summary>
        /// <param name="text"></param>
        public void UpdateDisplay(string text)
        {
            this.lbSendContent.Items.Add("服务端说：" +text);
        }
    }
}

聊天室服务端：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;
using System.Threading;
using System.IO;

namespace WindowsFormsApplication5
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            Thread thread = new Thread(new ThreadStart(Listen));
            thread.Start();
        }

        private void btnSend_Click(object sender, EventArgs e)
        {
            if (this.txtSendContent.Text == "")
            {
                MessageBox.Show("发送内容不能为空！");
                return;
            }
            this.lbSendContent.Items.Add("服务端说：" + this.txtSendContent.Text);

            TcpClient tcpclient = new TcpClient();
            tcpclient.Connect(IPAddress.Parse("192.168.0.187"), 9998);
            NetworkStream ns = tcpclient.GetStream();
            if (ns.CanWrite)
            {
                Byte[] sendBytes = Encoding.UTF8.GetBytes(this.txtSendContent.Text);
                ns.Write(sendBytes, 0, sendBytes.Length);
            }
            else
            {
                tcpclient.Close();
                ns.Close();
                return;
            }
            ns.Close();
            tcpclient.Close();
        }


        /// <summary>
        /// 修改显示委托
        /// </summary>
        /// <param name="text"></param>
        protected delegate void UpdateDisplayDelegate(string text);

        /// <summary>
        /// 监听方法
        /// </summary>
        public void Listen()
        {
            IPAddress ipAddress = IPAddress.Any;
            TcpListener tcpl = new TcpListener(ipAddress, 9999);
            tcpl.Start();
            while (true)
            {
                TcpClient tcpclient = tcpl.AcceptTcpClient();
                NetworkStream ns = tcpclient.GetStream();
                StreamReader sr = new StreamReader(ns);
                Invoke(new UpdateDisplayDelegate(UpdateDisplay), new object[] { sr.ReadToEnd() });
                tcpclient.Close();
            }
            //tcpl.Stop();
        }

        /// <summary>
        /// 赋值给ListBox控件
        /// </summary>
        /// <param name="text"></param>
        public void UpdateDisplay(string text)
        {
            this.lbSendContent.Items.Add("客户端说：" + text);
        }
    }
}