C#獲取網絡鄰居所有工作組和機器名稱

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
//查詢網絡上的計算機IP和用戶需要引用
using System.Data;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;
//關鍵引用空間System.directoryservices.dll,System.Management.dll
using System.DirectoryServices;
using System.Management;

//獲取網絡鄰居中的所有計算機IP和當前登錄用戶   
   string strDomain;
   string strComputer;
   string strShare;   
   
   DirectoryEntry root =new DirectoryEntry("WinNT:");
   foreach(DirectoryEntry Domain in root.Children)
   {
   //枚舉工作組或域
    strDomain=Domain.Name;
    comboBox1.Items.Add(strDomain);
    foreach(DirectoryEntry Computer in Domain.Children)
    {
    //枚舉指定工作組或域的計算機
     
      if(Computer.ScheMaclassName.Equals("Computer"))
      {
       strComputer=Computer.Name;
       comboBox2.Items.Add(strComputer);      
       
      
      //枚舉指定計算機的共享文件夾 
      
       //獲取本機共享的文件夾
       ManagementObjectSearcher searcher = new ManagementObjectSearcher("select * from win32_share");
        foreach (ManagementObject share in searcher.Get())
       {
        strShare=share["Name"].ToString();
        comboBox3.Items.Add(strShare);         
       }     
      
      }    
    }  
   }