C# 网络即时通信程序 源码下载

【实例简介】

1）用户之间的同步/异步的即时文字通讯

2）用户之间的文件传输功能；

3）至少支持在局域网内实现基本文字通信功能，考虑基于互联网的网络通信功能；

4）附加要求：

A，支持音/视频功能；

B，用户之间的通信参考QQ的弹窗效果；

C，发送文件前，应经过接收方的允许后才发送；

D，消息到达提醒功能；

【实例截图】

【核心代码】

处理接收的服务器的信息

        /// <summary>

        /// 处理接收的服务器端数据

        /// </summary>

        private void ReceiveServerData()

        {

            string receiveString = null;

            while (isExit == false)

            {

                try

                {

                    //从网络流中读出字符串

                    //此方法会自动判断字符串长度前缀，并根据长度前缀读出字符串

                    receiveString = br.ReadString();

                }

                catch

                {

                    if (isExit == false)

                    {

                        MessageBox.Show("与服务器失去联系。");

                    }

                    break;

                }

                string[] splitString= receiveString.Split(',');

                string command = splitString[0].ToLower();

                switch (command)

                {

                    case "login":  //格式：login,用户名

                        AddOnline(splitString[1] "," splitString[2]);

                        break;

                    case "logout":  //格式：logout,用户名

                        RemoveUserName(splitString[1] "," splitString[2]);

                        break;

                    case "talk":  //格式：talk,用户名,对话信息

                        //AddTalkMessage(splitString[1] "：\r\n");

                        //AddTalkMessage(receiveString.Substring(

                        //    splitString[0].Length splitString[1].Length 2));

                        AddTalkMessage(string.Format("{0}说：{1}",

                            splitString[1],receiveString.Substring(

                            splitString[0].Length splitString[1].Length 2)));

                        break;

                    default:

                        AddTalkMessage("什么意思啊：" receiveString);

                        break;

                }

            }

        }