1.通訊類 using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Threading; namespace UDPDataPack
{
?? public class UDPCommunication
??? {
??????? public UDPCommunication(int port,int timeOut)
??????? {
??????????? this.LocalReceivePort = port;
??????????? udpClient = new UdpClient(port);
??????????? udpClient.Client.ReceiveTimeout = timeOut;
??????????? receiveTimeOut = timeOut;
??????? } public UdpClient udpClient=null;
???? public string LocalIP = null;
???? public int LocalReceivePort;
???? public int receiveTimeOut;
???? public byte[] DataByte;
????? public bool Flag=false;
???? public byte[] receive()//接收
???? { if (udpClient.Client == null)
???????? {
???????????? udpClient = new UdpClient(LocalReceivePort);
???????????? udpClient.Client.ReceiveTimeout = receiveTimeOut;
???????? }
???????????? UdpClient udpClientTemp = udpClient;
???????????
???????????? IPEndPoint ipeEndPoint = null;
???????????? try
???????????? {
????????????????
???????????????? byte[] bytes = udpClientTemp.Receive(ref ipeEndPoint);
???????????????? DataByte = bytes;
???????????????? udpClientTemp.Close();
???????????????? //if (!Analyse.DecideCompletePack(bytes))
???????????????? //{
???????????????? //return DataByte=new byte[0];
???????????????? //}
???????????????? return DataByte; }
???????????? catch
???????????? { return new byte[0];
???????????? }??????
????????
???????
???? }
???? public? void start()
???? {
???????
??????? receive();
??????
????
???? }
?????? public void stop()
?????? {
?????????? Flag = true;
?????????
?????? } }
??
}

2.調用


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.Configuration;
using System.Net;
using System.Threading;
namespace UDPDataPack
{
??? public partial class UDPTestForm : Form
??? {
??????? public UDPTestForm()
??????? {
??????????? InitializeComponent();
??????????? string vertionStr = ConfigurationManager.AppSettings["ID"] + "????? " + ConfigurationManager.AppSettings["Description"];
??????????? this.Text = vertionStr;
??????????? this.LocalIPAdress.Text = GetIP();
?????????? textBoxPlayEvent = textBoxWrite;
?????????? //textBoxPlayEvent2 = textBoxWrite2;
??????????? Control.CheckForIllegalCrossThreadCalls = false; } public Analyse analyse = new Analyse(DataMemoryModel.LittleEndian);
?????? public event textBoxCallBack textBoxPlayEvent;
?????? //public event textBoxCallBack2 textBoxPlayEvent2;
??????? public Thread th;
??????? public bool stopFlag=false;
??????? UDPCommunication udpCommnication = null;

public static string GetIP()//獲取主機IP
??????? {
??????????? string strAddr = "";
??????????? try
??????????? {
??????????????? string strHostName = System.Net.Dns.GetHostName();
??????????????? System.Net.IPHostEntry ipEntry = System.Net.Dns.GetHostEntry(strHostName);
??????????????? foreach (IPAddress _ipaddress in ipEntry.AddressList)
??????????????? {
??????????????????? if (_ipaddress.AddressFamily.ToString().ToLower() == "internetwork")
??????????????????? {
??????????????????????? strAddr = _ipaddress.ToString();
??????????????????????? break;
??????????????????? }
??????????????? }
??????????? }
??????????? catch (System.Exception e)
??????????? {
????????????? throw e;
??????????? } return strAddr;
??????? } private void buttonSingleReceive_Click(object sender, EventArgs e)//單次接收
??????? {
???????????
??????? } private void buttonStart_Click(object sender, EventArgs e)//循環接收
??????? {
??????????? stopFlag = false;
??????????? int receivePort = Convert.ToInt32(this.LocaclReceivePort.Text);
??????????? int receiveTimeOut = Convert.ToInt32(this.textBoxReceiveTimeOut.Text);
??????????? if(udpCommnication==null)
??????????? {
??????????? udpCommnication =new UDPCommunication(receivePort, receiveTimeOut);
??????????? } this.th = new Thread(threadFuction);
????????????? th.Start(); //udpCommnication.udpClient.Close();
??????? }
??????? //public void threadRun()
??????? //{
??????? //??? MethodInvoker In = new MethodInvoker(threadFuction);
??????? //?? this.BeginInvoke(In);
???????
??????? //}
??????? public void threadFuction()
??????? {
??????????? while (!stopFlag)
??????????? {?????????????
??????????????? if (udpCommnication == null)
??????????????? {
??????????????????? int receivePort = Convert.ToInt32(this.LocaclReceivePort.Text);
??????????????????? int receiveTimeOut = Convert.ToInt32(this.textBoxReceiveTimeOut.Text);
??????????????????? udpCommnication = new UDPCommunication(receivePort, receiveTimeOut);
??????????????? }
??????????????? try
??????????????? {
??????????????????? byte[] receiv = udpCommnication.receive();
??????????????????? //string content = Encoding.Default.GetString(receiv);
??????????????????? //this.textBoxPlayEvent(receiv);
??????????????????? textBoxWrite(receiv); //this.textBoxPlayEvent2(content );
??????????????? }
??????????????? catch
??????????????? {
??????????????? }
??????????? } } public delegate void textBoxCallBack(byte[] content);
??????? public delegate void textBoxCallBack2(string content);
??????? public void textBoxWrite2(string content)
??????? { this.textBoxContent.AppendText(content? + Environment.NewLine);
??????? }

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