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?廣播
{
????public?partial?class?Form1?:?Form
????{
????????UdpClient?client;
????????int?port;
????????volatile?bool?isStopped;
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????????port?=?8888;
????????????client?=?new?UdpClient（port）;
????????????isStopped?=?false;
????????}

????????private?async?void?buttonSend_ClickAsync（object?sender?EventArgs?e）
????????{
????????????try
????????????{
????????????????byte[]?b?=?Encoding.Unicode.GetBytes（TextBoxMessage.Text）;
????????????????IPEndPoint?remote?=?new?IPEndPoint（IPAddress.Broadcast?port）;
????????????????await?client.SendAsync（b?b.Length?remote）;
????????????????TextBoxMessage.Clear（）;
????????????}
????????????catch
????????????{
????????????????MessageBox.Show（“發(fā)送失??！“）;
????????????}
????????}


????????private?async?void?ReceiveData（）
????????{

????????????while?（!isStopped）
????????????{
????????????????try
????????????????{
????????????????????Task?h?=?client.ReceiveAsync（）;
????????????????????UdpReceiveResult?result?=?await?h;
????????????????????string?message?=?Encoding.Unicode.GetString（result.Buffer）;
????????????????????IPEndPoint?remote?=?result.RemoteEndPoint;
????????????????????showMessageDel?d?=?new?showMessageDel（ShowMessage）;
????????????????????ListBox.Invoke（d?remote.ToString（）?+?“說：“?+?message.ToString（））;
????????????????}
????????????????catch
????????????????{
????????????????????break;
????????????????}
????????????}
????????}
????????private?delegate?void?showMessageDel（string?str）;
????????private?void?ShowMessage（string?str）
????????{

????????????ListBox.Items.Add（str）;

????????}

????????private?void?Form1_Load（object?sender?EventArgs?e）
????????{
????????????Thread?h?=?new?Thread（ReceiveData）;
????????????h.IsBackground?=?true;
????????????h.Start（）;
????????}
????}
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-05-16?13:52??廣播\
?????目錄???????????0??2017-05-17?11:21??廣播\.vs\
?????文件??????????37??2017-05-17?10:56??廣播\.vs\ProjectSettings.json
?????文件??????258048??2017-05-17?11:21??廣播\.vs\slnx.sqlite
?????目錄???????????0??2017-05-16?13:52??廣播\.vs\廣播\
?????目錄???????????0??2017-05-16?13:52??廣播\.vs\廣播\v15\
?????文件???????17920??2017-05-17?10:56??廣播\.vs\廣播\v15\.suo
?????目錄???????????0??2017-05-17?11:21??廣播\廣播\
?????文件?????????189??2017-05-16?13:52??廣播\廣播\App.config
?????文件????????3745??2017-05-17?11:20??廣播\廣播\Form1.Designer.cs
?????文件????????2227??2017-05-17?11:21??廣播\廣播\Form1.cs
?????文件????????5817??2017-05-17?11:18??廣播\廣播\Form1.resx
?????文件?????????518??2017-05-16?13:52??廣播\廣播\Program.cs
?????目錄???????????0??2017-05-16?13:52??廣播\廣播\Properties\
?????文件????????1310??2017-05-16?13:52??廣播\廣播\Properties\AssemblyInfo.cs
?????文件????????2825??2017-05-16?13:52??廣播\廣播\Properties\Resources.Designer.cs
?????文件????????5612??2017-05-16?13:52??廣播\廣播\Properties\Resources.resx
?????文件????????1093??2017-05-16?13:52??廣播\廣播\Properties\Settings.Designer.cs
?????文件?????????249??2017-05-16?13:52??廣播\廣播\Properties\Settings.settings
?????目錄???????????0??2017-05-17?10:56??廣播\廣播\bin\
?????目錄???????????0??2017-05-17?11:18??廣播\廣播\bin\Debug\
?????文件???????12288??2017-05-17?11:20??廣播\廣播\bin\Debug\廣播.exe
?????文件?????????189??2017-05-16?13:52??廣播\廣播\bin\Debug\廣播.exe.config
?????文件???????24064??2017-05-17?11:20??廣播\廣播\bin\Debug\廣播.pdb
?????目錄???????????0??2017-05-17?11:22??廣播\廣播\bin\Release\
?????目錄???????????0??2017-05-17?10:56??廣播\廣播\obj\
?????目錄???????????0??2017-05-17?11:18??廣播\廣播\obj\Debug\
?????文件??????????42??2017-05-17?10:56??廣播\廣播\obj\Debug\CoreCompileInputs.cache
?????文件?????????868??2017-05-16?13:52??廣播\廣播\obj\Debug\DesignTimeResolveAssemblyReferences.cache
?????文件????????7280??2017-05-17?10:56??廣播\廣播\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????目錄???????????0??2017-05-17?11:22??廣播\廣播\obj\Debug\TempPE\
............此處省略13個文件信息