NetWork ScanIP Address Program

題目: 内部網絡掃描程式

參考:http://www.microsoft.com/china/community/program/originalarticles/TechDoc/Csharpnet.mspx

如下圖:

實作功能:

1 目前本機的連機狀态.

2 計算機名稱--->IP;   IP--->計算機名稱

3 網段掃描

實作過程:

需要調用的引用:

using System;

using System.Runtime ;

using System.Runtime.InteropServices ; 

namespace NetworkScan

{

 /**//// <summary>

 /// 

 /// </summary>

 public class InternetCS

 {

  //Creating the extern function 

  [DllImport("wininet.dll")] 

  private extern static bool InternetGetConnectedState(int Description,int ReservedValue); 

  //Creating a function that uses the API function 

  public static bool IsConnectedToInternet() 

  { 

   int Desc=0; 

   return InternetGetConnectedState(Desc,0); 

  }

 }

}

這個引用實作過程是:監控目前本機的連網狀态

為了實作時實監控,需要在主程式裡面進行時實監控 ,主程式裡面添加Timer控件,時間間隔是1000微秒

private void timer1_Tick(object sender, System.EventArgs e)

        {

            label11.Text=DateTime.Now.Hour.ToString()+":"+ DateTime.Now.Minute.ToString()+":"+DateTime.Now.Second.ToString();

            if (textBox3.Text!="")

            {

                button3.Enabled=false;

            }

            else

                button3.Enabled=true;

            bool b_IsConnection=InternetCS.IsConnectedToInternet();

            if (b_IsConnection)

                //

                textBox3.BackColor=Color.Red;//聯網狀态

                textBox3.BackColor=Color.Yellow;  //非聯網狀态

        }

窗體Load事件裡面,代碼如下:

private void Form1_Load(object sender, System.EventArgs e)

            timer1.Enabled=true;

            IPHostEntry myHost = new IPHostEntry();

            try

                getlocalipaddress.Text="";

                //得到本地主機的DNS資訊

                myHost = Dns.GetHostByName(Dns.GetHostName());

                //顯示本地主機名

                getlocalname.Text = "你的計算機名稱："+myHost.HostName.ToString();

                //顯示本地主機的IP位址表

                for(int i=0; i<myHost.AddressList.Length;i++)

                {

                    getlocalipaddress.Text="本地主機IP位址->"+myHost.AddressList[i].ToString();

                }

            catch

IP--->ComputerName

private void button2_Click(object sender, System.EventArgs e)

            //IP--->Name

            label5.Text="";

                IPAddress test1 = IPAddress.Parse(textBox2.Text.Trim());

                IPHostEntry iphe = Dns.GetHostByAddress(test1);

                label5.Text=iphe.HostName;

                if (label5.Text.Trim()=="")

                    label5.Text="沒有找到對應的計算機名稱";

Name--->IP

    private void button1_Click_1(object sender, System.EventArgs e)

            //name--->IP

            label1.Text="";

                IPHostEntry myDnsToIP = new IPHostEntry();

                //Dns.Resolve 方法: 将 DNS 主機名或以點分隔的四部分表示法格式的 //  IP 位址解析為 IPHostEntry執行個體

                myDnsToIP =Dns.Resolve(textBox1.Text.ToString());

                //顯示此域名的IP位址的清單

                for(int i=0;i<myDnsToIP.AddressList.Length;i++)

                    label1.Text+=myDnsToIP.AddressList[i].ToString();

            catch 

                if (label1.Text.Trim()=="")

                    label1.Text="沒有找到對應IP";

網段掃描部分:

        private void button3_Click(object sender, System.EventArgs e)

            int i_IpBegin=0;

            int i_IpEnd=0;

                i_IpBegin=int.Parse(textBox7.Text.Trim());

                i_IpEnd=int.Parse(textBox8.Text.Trim());

                if ((i_IpBegin<0)&&(i_IpEnd>255))

                    MessageBox.Show("輸出超出範圍");

                    return;

                MessageBox.Show("輸入錯誤");

                return;

            textBox4.Text="";

            //Thread 類: 建立并控制線程

            Thread thScan = new Thread(new ThreadStart(ScanTarget));

            //Thread.Start 方法:啟動線程

            thScan.Start();

        private void ScanTarget()

            //構造IP位址的31-8BIT 位，也就是固定的IP位址的前段

            // numericUpDown1是定義的System.Windows.Forms.NumericUpDown控件

            int i_IpBegin=int.Parse(textBox7.Text.Trim());

            int i_IpEnd=int.Parse(textBox8.Text.Trim());

            string strIPAddress=textBox5.Text;

            //掃描的操作

            for(int i=i_IpBegin;i<=i_IpEnd;i++)

                string strScanIPAdd = strIPAddress +i.ToString();

                //轉換成IP位址

                IPAddress myScanIP = IPAddress.Parse(strScanIPAdd);

                textBox3.Text=i.ToString();

                try

                {        

                    //Dns.GetHostByAddress 方法: 根據 IP 地

                    //址擷取 DNS 主機資訊。

                    IPHostEntry myScanHost = Dns.GetHostByAddress(myScanIP);

                    //擷取主機的名

                    string strHostName =myScanHost.HostName.ToString();

                    textBox4.Text+=strScanIPAdd+"->"+strHostName+"\r\n";

                catch //(Exception error)

                    //MessageBox.Show(error.Message);                    

            } 

            textBox3.Text="";  

            MessageBox.Show("掃描完成");

        private void Form1_Closed(object sender, System.EventArgs e)

            Application.Exit(); 

        private void textBox3_TextChanged(object sender, System.EventArgs e)

        private void ShowHideWindow(bool isShow)

            if (isShow)

                if (this.ShowInTaskbar==false)

                    this.ShowInTaskbar=true;

                    this.Show();

                    this.WindowState=FormWindowState.Normal;

                else

                    if(this.WindowState == FormWindowState.Minimized)

                    {

                        this.WindowState = FormWindowState.Normal;

                    }

                this.Activate();

                if (this.ShowInTaskbar==true)

                    this.Hide();

                    this.ShowInTaskbar=false;

    }

使用的外部類:

using System.IO;

using System.Net;

using System.Threading;

using System.Text.RegularExpressions;