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;
using?System.Net.Sockets;
using?System.Threading;

namespace?Client
{
????public?partial?class?frm_main?:?Form
????{
????????public?frm_main（）
????????{
????????????InitializeComponent（）;
????????}

????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????Send（）;
????????}

????????public?void?Send（）
????????{
????????????Socket?s?=?new?Socket（AddressFamily.InterNetwork?SocketType.Dgram?ProtocolType.Udp）;//創建Socket實例，以便發送消息
????????????//通過加載對方的網絡地址創建IPAddress實例，起到廣播的作用
????????????IPAddress?broadcast?=?IPAddress.Parse（this.textBox2.Text.ToString（））;
????????????//把要發送的字符串轉換為字節數組，以便以數據流的方式在網絡上傳輸
????????????byte[]?sendbuf?=?Encoding.GetEncoding（“gb2312“）.GetBytes（this.textBox1.Text.ToString（））;
????????????//通過加載對方的IP地址和對方指定的端口號（11000）創建IPEndPoint實例
????????????IPEndPoint?ep?=?new?IPEndPoint（broadcast?11000）;
????????????s.SendTo（sendbuf?ep）;//發送消息到指定的主機
????????????string?strmsg?=?DateTime.Now.ToLongTimeString（）?+?“\n“?+?“?“?+?this.textBox1.Text?+?“\n“;//
????????????richTextBox1.AppendText（strmsg）;//將發送的消息添加到文本框
????????????richTextBox1.ScrollToCaret（）;//自動滾動文本框的滾動條
????????????textBox1.Clear（）;//清空發送消息文本框
????????}
????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2013-09-18?21:57??基于UDP協議網上聊天程序\
?????目錄???????????0??2013-09-18?21:57??基于UDP協議網上聊天程序\Client\
?????目錄???????????0??2013-09-18?21:57??基于UDP協議網上聊天程序\Client\bin\
?????目錄???????????0??2013-09-18?21:57??基于UDP協議網上聊天程序\Client\bin\Debug\
?????文件???????10240??2013-06-16?17:09??基于UDP協議網上聊天程序\Client\bin\Debug\Client.exe
?????文件???????24064??2013-06-16?17:09??基于UDP協議網上聊天程序\Client\bin\Debug\Client.pdb
?????文件???????11600??2013-06-16?20:04??基于UDP協議網上聊天程序\Client\bin\Debug\Client.vshost.exe
?????文件?????????490??2010-03-17?22:39??基于UDP協議網上聊天程序\Client\bin\Debug\Client.vshost.exe.manifest
?????文件????????3671??2013-06-16?16:06??基于UDP協議網上聊天程序\Client\Client.csproj
?????文件????????1686??2013-06-16?17:09??基于UDP協議網上聊天程序\Client\Form1.cs
?????文件????????5203??2013-06-16?16:37??基于UDP協議網上聊天程序\Client\Form1.Designer.cs
?????文件????????5817??2013-06-16?16:37??基于UDP協議網上聊天程序\Client\Form1.resx
?????目錄???????????0??2013-09-18?21:57??基于UDP協議網上聊天程序\Client\obj\
?????目錄???????????0??2013-09-18?21:57??基于UDP協議網上聊天程序\Client\obj\x86\
?????目錄???????????0??2013-09-18?21:57??基于UDP協議網上聊天程序\Client\obj\x86\Debug\
?????文件????????1180??2013-06-16?20:04??基于UDP協議網上聊天程序\Client\obj\x86\Debug\Client.csproj.FileListAbsolute.txt
?????文件???????10240??2013-06-16?17:09??基于UDP協議網上聊天程序\Client\obj\x86\Debug\Client.exe
?????文件?????????180??2013-06-16?16:37??基于UDP協議網上聊天程序\Client\obj\x86\Debug\Client.frm_main.resources
?????文件???????24064??2013-06-16?17:09??基于UDP協議網上聊天程序\Client\obj\x86\Debug\Client.pdb
?????文件?????????180??2013-06-16?16:07??基于UDP協議網上聊天程序\Client\obj\x86\Debug\Client.Properties.Resources.resources
?????文件????????6383??2013-06-16?17:09??基于UDP協議網上聊天程序\Client\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????文件?????????352??2013-06-16?16:37??基于UDP協議網上聊天程序\Client\obj\x86\Debug\GenerateResource.read.1.tlog
?????文件?????????804??2013-06-16?16:37??基于UDP協議網上聊天程序\Client\obj\x86\Debug\GenerateResource.write.1.tlog
?????文件????????7897??2013-06-16?17:09??基于UDP協議網上聊天程序\Client\obj\x86\Debug\ResolveAssemblyReference.cache
?????目錄???????????0??2013-06-16?16:02??基于UDP協議網上聊天程序\Client\obj\x86\Debug\TempPE\
?????文件?????????490??2013-06-16?16:04??基于UDP協議網上聊天程序\Client\Program.cs
?????目錄???????????0??2013-09-18?21:57??基于UDP協議網上聊天程序\Client\Properties\
?????文件????????1372??2013-06-16?16:02??基于UDP協議網上聊天程序\Client\Properties\AssemblyInfo.cs
?????文件????????2862??2013-06-16?16:02??基于UDP協議網上聊天程序\Client\Properties\Resources.Designer.cs
?????文件????????5612??2013-06-16?16:02??基于UDP協議網上聊天程序\Client\Properties\Resources.resx
?????文件????????1091??2013-06-16?16:02??基于UDP協議網上聊天程序\Client\Properties\Settings.Designer.cs
............此處省略33個文件信息