获取局域网的计算机列表

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;         }

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);                 }             }         }     }

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;         } 

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。