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

namespace?ScanDemo
{
????public?partial?class?Form1?:?Form
????{
????????#region?聲明變量
????????//已掃描端口數(shù)目
????????double?scannedCount?=?0;
????????//正在運(yùn)行的線程數(shù)目
????????int?runningThreadCount?=?0;
??????
???????
????????//最大工作線程數(shù)
????????static?int?maxThread?=?100;

????????//IP地址
????????string?host?=?null;
????????//端口
????????int?port?=?1234;


????????int?startIP=1;
????????int?endIP=255;
????????string?addresIP?=?“192.168.1.“;
????????#endregion

????????#region?窗體方法
?????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}???????

????????private?void?Form1_Load（object?sender?EventArgs?e）
????????{
????????????this.Text?=?string.Format（“wk986?掃描IP段指定端口?{0}-{1}:{2}“
????????????????addresIP+startIPendIPport）;
????????}

#endregion

????????#region?掃描方法

????????public?void?Scan（string?m_host?int?m_port）
????????{
????????????//我們直接使用比較高級的TcpClient類
????????????TcpClient?tc?=?new?TcpClient（）;
????????????//設(shè)置超時時間
????????????tc.SendTimeout?=?tc.ReceiveTimeout?=?2000;

????????????try
????????????{
????????????????//同步方法

????????????????//IPAddress?ip?=?IPAddress.Parse（host）;
????????????????//IPEndPoint?IPendp?=?new?IPEndPoint（ip?port）;
????????????????//tc.Connect（IPendp）;

????????????????//異步方法
????????????????IAsyncResult?oAsyncResult?=?tc.BeginConnect（m_host?m_port?null?null）;
????????????????oAsyncResult.AsyncWaitHandle.WaitOne（1000?true）;//1000為超時時間?

????????????????if?（tc.Connected）
????????????????{
????????????????????//如果連接上，證明此端口為開放狀態(tài)
????????????????????UpdateListBox（listBox1?m_host?+?“:“?+?m_port.ToString（））;
????????????????}
????????????}
????????????catch?（System.Net.Sockets.SocketException?e）
????????????{
????????????????//容錯處理
????????????????//MessageBox.Show（“Port?{0}?is?closed“?host.ToString（））;
????????????????//Console.WriteLine（e.Message）;
????????????}
????????????finally
????????????{??????????????
????????????????tc.Close（）;
????????????????tc?=?null;????????????????
????????????????scannedCount++;
????????????????runningThreadCount--;

????????????}
????????}
????????#endregion

????????#region?按鈕
????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????if?（!backgroundWorker1.IsBusy）
????????????{
????????????????listBox1.Items.Clear（）;
????????????????scannedCount?=?0;???????????????
????????????????runningThreadCount?=?0;
????????????????backgroundWorker1.RunWorkerAsync（）;
????????????}
????????}

????????private?void?button2_Click（object?sender?EventArgs?e）
????????{
????????????backgroundWorker1.CancelAsync（）;
????????}


????????private?void?button3_Click（object?sender?EventArgs?e）
??????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????7726??2013-03-14?22:34??IP端口掃描\ScanDemo\Form1.cs

?????文件???????5797??2013-03-14?21:41??IP端口掃描\ScanDemo\Form1.Designer.cs

?????文件???????6022??2013-03-14?21:41??IP端口掃描\ScanDemo\Form1.resx

?????文件???????3541??2013-03-14?22:13??IP端口掃描\ScanDemo\Form2.cs

?????文件???????7161??2013-03-14?22:05??IP端口掃描\ScanDemo\Form2.Designer.cs

?????文件???????5817??2013-03-14?22:05??IP端口掃描\ScanDemo\Form2.resx

?????文件????????489??2013-03-13?10:27??IP端口掃描\ScanDemo\Program.cs

?????文件???????1348??2013-03-12?16:55??IP端口掃描\ScanDemo\Properties\AssemblyInfo.cs

?????文件???????2868??2013-03-12?16:55??IP端口掃描\ScanDemo\Properties\Resources.Designer.cs

?????文件???????5612??2013-03-12?16:55??IP端口掃描\ScanDemo\Properties\Resources.resx

?????文件???????1095??2013-03-12?16:55??IP端口掃描\ScanDemo\Properties\Settings.Designer.cs

?????文件????????249??2013-03-12?16:55??IP端口掃描\ScanDemo\Properties\Settings.settings

?????文件???????4025??2013-03-14?21:16??IP端口掃描\ScanDemo\ScanDemo.csproj

?????文件????????858??2013-03-14?21:48??IP端口掃描\ScanDemo\SearchEventArgs.cs

?????文件???????1546??2013-03-13?22:03??IP端口掃描\ScanIP.sln

????..A..H.?????50176??2013-03-14?22:49??IP端口掃描\ScanIP.suo

????..A..H.?????29696??2013-03-13?22:01??IP端口掃描\ScanIP.v11.suo

?????目錄??????????0??2013-03-13?22:00??IP端口掃描\ScanDemo\Properties

?????目錄??????????0??2013-03-14?22:49??IP端口掃描\ScanDemo

?????目錄??????????0??2013-03-13?22:01??IP端口掃描

-----------?---------??----------?-----??----

???????????????134026????????????????????20