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.NetworkInformation;

 using System.IO;

 using System.Collections;

 using System.Diagnostics;

 using System.DirectoryServices;

 using System.Management;

 namespace SocketTransferFile

 {

     /// <summary>

     ///

     /// </summary>

     public partial class Form1 : Form

     {

         //局域网计算机列表

         List<LocalMachine> machineList = new List<LocalMachine>();

         //Form构造函数

         public Form1()

         {

             InitializeComponent();

             InitData();

         }

         /// <summary>

         /// 初始化数据

         /// </summary>

         private void InitData()

         {

             lvLocalMachine.Items.Clear();

             machineList.Clear();

             //获取当前域的计算机列表

             label4.Text = DateTime.Now.ToString();

             GetAllLocalMachines();

             foreach (LocalMachine machine in machineList)

             {

                 ListViewItem item = new ListViewItem(new string[] { machine.Name, machine.IP });

                 lvLocalMachine.Items.Add(item);

             }

             label5.Text = DateTime.Now.ToString();

             //获取Active Directory中的计算机节点

             //label4.Text = DateTime.Now.ToString();

             //EnumComputers();

             //label5.Text = DateTime.Now.ToString();

             //获取指定IP范围内的计算机

             //label4.Text = DateTime.Now.ToString();

             //EnumComputersByPing();

             //label5.Text = DateTime.Now.ToString();

         }

         /// <summary>

         /// Handles the Click event of the button1 control.

         /// </summary>

         /// <param name="sender">The source of the event.</param>

         /// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>

         private void button1_Click(object sender, EventArgs e)

         {

             InitData();

         }

         /// <summary>

         /// 获取指定IP范围内的计算机

         /// </summary>

         private void EnumComputersByPing()

         {

             try

             {

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

                 {

                     Ping myPing;

                     myPing = new Ping();

                     myPing.PingCompleted += new PingCompletedEventHandler(_myPing_PingCompleted);

                     string pingIP = "192.168.1." + i.ToString();

                     myPing.SendAsync(pingIP, , null);

                 }

             }

             catch

             {

             }

         }

         /// <summary>

         /// Handles the PingCompleted event of the _myPing control.

         /// </summary>

         /// <param name="sender">The source of the event.</param>

         /// <param name="e">The <see cref="System.Net.NetworkInformation.PingCompletedEventArgs"/> instance containing the event data.</param>

         private void _myPing_PingCompleted(object sender, PingCompletedEventArgs e)

         {

             if (e.Reply.Status == IPStatus.Success)

             {

                 LocalMachine localMachine = new LocalMachine();

                 localMachine.IP = e.Reply.Address.ToString();

                 //localMachine.Name = Dns.GetHostByAddress(IPAddress.Parse(e.Reply.Address.ToString())).HostName;

                 localMachine.Name = Dns.Resolve(e.Reply.Address.ToString()).HostName;

                 ListViewItem item = new ListViewItem(new string[] { localMachine.Name, localMachine.IP });

                 lvLocalMachine.Items.Add(item);

             }

         }

         /// <summary>

         /// 获取Active Directory中的计算机节点

         /// </summary>

         private void EnumComputers()

         {

             using (DirectoryEntry root = new DirectoryEntry("WinNT:"))

             {

                 foreach (DirectoryEntry domain in root.Children)

                 {

                     foreach (DirectoryEntry computer in domain.Children)

                     {

                         if (computer.Name == "Schema")

                         {

                             continue;

                         }

                         try

                         {

                             LocalMachine localMachine = new LocalMachine();

                             localMachine.IP = Dns.GetHostEntry(computer.Name).AddressList[].ToString();

                             localMachine.Name = computer.Name;

                             ListViewItem item = new ListViewItem(new string[] { localMachine.Name, localMachine.IP });

                             lvLocalMachine.Items.Add(item);

                         }

                         catch

                         {

                         }

                     }

                 }

             }

         }

         /// <summary>

         /// 获取当前域的计算机列表

         /// </summary>

         /// <returns></returns>

         private void GetAllLocalMachines()

         {

             Process p = new Process();

             p.StartInfo.FileName = "net";

             p.StartInfo.Arguments = "view";

             p.StartInfo.UseShellExecute = false;

             p.StartInfo.RedirectStandardInput = true;

             p.StartInfo.RedirectStandardOutput = true;

             p.StartInfo.RedirectStandardError = true;

             p.StartInfo.CreateNoWindow = true;

             p.Start();

             p.StandardInput.WriteLine("exit");

             StreamReader reader = p.StandardOutput;

             for (string line = reader.ReadLine(); line != null; line = reader.ReadLine())

             {

                 line = line.Trim();

                 if (line.StartsWith(@"\\"))

                 {

                     string name = line.Substring().Trim();

                     //如果有路由器，会列出路由器，但是获取不到IP地址，会报错

                     try

                     {

                         LocalMachine localMachine = new LocalMachine();

                         localMachine.IP = Dns.GetHostEntry(name).AddressList[].ToString();

                         localMachine.Name = name;

                         machineList.Add(localMachine);

                     }

                     catch

                     {

                     }

                 }

             }

         }

     }

 public class LocalMachine

 {

     public string IP { get; set; }

     public string Name { get; set; }

 }

 }