获得局域网中计算机的列表（包括计算机名，IP和MAC）的方法(页 1) - C# 论坛

梦幻情缘 发表于 2006-3-10 12:19

获得局域网中计算机的列表（包括计算机名，IP和MAC）的方法

有的时候需要根据MAC来限定登录的计算机，为此查找了不少资料（有来自博客堂和CSDN），下面是获得远程计算机的MAC和局域网中计算机列表的方法。 
using System; 
using System.Collections; 
using System.Diagnostics; 
using System.Management; 
using System.Net; 
using System.DirectoryServices; 
using System.Runtime.InteropServices; 
using System.Text.RegularExpressions; 
获得本机的MAC地址 
 public static string GetLocalMac() 
 { 
 string strMac = string.Empty; 
 ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration"); 
 ManagementObjectCollection moc = mc.GetInstances(); 
 foreach(ManagementObject mo in moc) 
 { 
 if ((bool)mo["IPEnabled"] == true) 
 strMac += mo["MacAddress"].ToString() ; 
 
 } 
 return strMac.ToUpper(); 
 } 
获得远程计算机的MAC地址 
方法一：使用API，利用ARP协议，只能获得同网段计算机的MAC 
 [DllImport("Iphlpapi.dll")] 
 private static extern int SendARP(Int32 dest,Int32 host,ref Int64 mac,ref Int32 length); 
 [DllImport("Ws2_32.dll")] 
 private static extern Int32 inet_addr(string ip); 
 public static string GetRemoteMac(string clientIP) 
 { 
 string ip = clientIP; 
 if ( ip == "127.0.0.1") 
 ip = GetLocalIP()[0]; 
 Int32 ldest=inet_addr(ip); 
 Int64 macinfo=new Int64(); 
 Int32 len=6; 
 try 
 { 
 SendARP(ldest,0,ref macinfo,ref len); 
 } 
 catch 
 { 
 return ""; 
 } 
 string originalMACAddress = Convert.ToString(macinfo,16); 
 if (originalMACAddress.Length<12) 
 { 
 originalMACAddress = originalMACAddress.PadLeft(12,'0'); 
 } 
 string macAddress; 
 if(originalMACAddress!="0000" && originalMACAddress.Length==12) 
 { 
 string mac1,mac2,mac3,mac4,mac5,mac6; 
 mac1=originalMACAddress.Substring(10,2); 
 mac2=originalMACAddress.Substring(8,2); 
 mac3=originalMACAddress.Substring(6,2); 
 mac4=originalMACAddress.Substring(4,2); 
 mac5=originalMACAddress.Substring(2,2); 
 mac6=originalMACAddress.Substring(0,2); 
 macAddress=mac1+"-"+mac2+"-"+mac3+"-"+mac4+"-"+mac5+"-"+mac6; 
 } 
 else 
 { 
 macAddress=""; 
 } 
 return macAddress.ToUpper(); 
 } 
 方法二：使用windows的命令nbtstat 
 public static string GetRemoteMacByNetBIOS(string clientIP) 
 { 
 string ip = clientIP; 
 if ( ip == "127.0.0.1") 
 ip = GetLocalIP()[0]; 
 string dirResults=""; 
 ProcessStartInfo psi = new ProcessStartInfo(); 
 Process proc = new Process(); 
 psi.FileName = "nbtstat.exe"; 
 //psi.RedirectStandardInput = false; 
 psi.RedirectStandardOutput = true;psi.RedirectStandardError=true; 
 psi.Arguments = "-A " + ip; 
 psi.UseShellExecute = false; 
 proc = Process.Start(psi); 
 dirResults = proc.StandardOutput.ReadToEnd(); 
 string error = proc.StandardError.ReadToEnd(); 
 proc.WaitForExit(); 
 dirResults=dirResults.Replace("\r","").Replace("\n","").Replace("\t",""); 
 
 Regex reg=new Regex("Mac[ ]{0,}Address[ ]{0,}=[ ]{0,}(?((.)*?))__MAC",RegexOptions.IgnoreCase|RegexOptions.Compiled); 
 Match mc=reg.Match(dirResults+"__MAC"); 
 
 if(mc.Success) 
 { 
 return mc.Groups["key"].Value.ToUpper(); 
 } 
 else 
 { 
 return ""; 
 } 
 } 
使用此方法需要足够的操作系统的权限。在Web中,可以将ASP.net用户加入管理员组。 
对于上面两个地方都用到的GetLocalIP是一个获取本机IP的方法： 
 public static string[] GetLocalIP() 
 { 
 string hostName = Dns.GetHostName(); 
 IPHostEntry ipEntry=Dns.GetHostByName(hostName); 
 IPAddress[] arr=ipEntry.AddressList; 
 string[] result = new string[arr.Length]; 
 for(int i=0;i 
 { 
 result[i] = arr[i].ToString(); 
 } 
 return result; 
 } 
 获得局域网内计算机的列表 
方法一：使用逐个IP地址扫描的方式
利用多线程来对每个IP逐个扫描。
ComputerAddressInfo cai = new ComputerAddressInfo("192.168.1",42,53); 
Thread thScan = new Thread(new ThreadStart(cai.ScanComputers)); 
thScan.Start(); 
// 
 public class ComputerAddressInfo 
 { 
 private int startIP = 0; 
 private int endIP = 0; 
 private string ipPrefix = ""; 
 private ArrayList computerList = null; 
 
 public ComputerAddressInfo(string ipPrefix,int startIP,int endIP) 
 { 
 this.startIP = startIP; 
 this.endIP = endIP; 
 this.ipPrefix = ipPrefix; 
 computerList = new ArrayList(); 
 } 

 public void ScanComputers() 
 { 
 for(int i=startIP;i<=endIP;i++) 
 { 
 string scanIP = ipPrefix +"."+i.ToString(); 
 IPAddress myScanIP = IPAddress.Parse(scanIP); 
 IPHostEntry myScanHost = null; 
 string[] arr = new string[2]; 
 try 
 { 
 myScanHost = Dns.GetHostByAddress(myScanIP); 
 } 
 catch 
 { 
 continue; 
 } 
 if (myScanHost != null) 
 { 
 arr[0] = myScanHost.HostName; 
 arr[1] = scanIP; 
 computerList.Add(arr); 
 } 
 } 
 } 
 } 
 此方法速度比较慢。
方法二：使用Active Directory 
 public static ArrayList GetComputerList() 
 { 
 ArrayList list = new ArrayList(); 
 //or use "WinNT://your_domain_name" 
 DirectoryEntry root = new DirectoryEntry("WinNT:"); 
 DirectoryEntries domains = root.Children; 
 domains.SchemaFilter.Add("domain"); 
 foreach (DirectoryEntry domain in domains) 
 { 
 DirectoryEntries computers = domain.Children; 
 computers.SchemaFilter.Add("computer"); 
 foreach (DirectoryEntry computer in computers) 
 { 
 object[] arr = new string[3]; 
 IPHostEntry iphe = null; 
 try 
 { 
 iphe = Dns.GetHostByName(computer.Name); 
 } 
 catch 
 { 
 continue; 
 } 
 arr[0] = domain.Name; 
 arr[1] = computer.Name; 
 if ( iphe != null && iphe.AddressList.Length >0 ) 
 { 
 for ( int i=0;i 
 arr[2] += iphe.AddressList[i].ToString()+","; 
 arr[2] = arr[2].ToString().Remove(arr[2].ToString().Length-1,1); 
 } 
 else 
 arr[2] = ""; 
 list.Add(arr); 
 } 
 } 
 return list; 
 } 
 此方法速度也比较慢。
后记 
上面两个获得局域网内的计算机列表的方法都很费时，目前还没有找到更好的办法。

dazhi_ 发表于 2006-3-14 22:16

没有人学习网络方面编程的吗[em01]

nieyouqing 发表于 2006-3-19 20:35

楼主我想问一下这个程中出现这个问题应该怎么解决? 类型或命名空间名称“Management”在类或命名空间“System”中不存在(是否缺少程序集引用？)

kevinhou 发表于 2006-10-17 13:34

me too ! 类型或命名空间名称“Management”在类或命名空间“System”中不存在(是否缺少程序集引用？)

CrazyWeed0907 发表于 2006-10-17 13:49

using System.Management

IT浪子 发表于 2006-12-12 20:41

楼上的Management好像点不出来吧,可以添加应用来添加这个命名空间的,

yz870735 发表于 2008-6-25 11:57

有没有VB版本的 `我C#不懂 ``

雪雨星风 发表于 2008-6-25 12:23

[em14]

gotowest 发表于 2008-8-4 16:05

顶版主一下，我正缺这样的资料。很不错。

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