如何获取Client的MAC（网卡的号码）？

  
ManagementObjectSearcher query =new ManagementObjectSearcher("SELECT * FROM Win32_NetworkAdapterConfiguration") ;
   ManagementObjectCollection queryCollection = query.Get();
   foreach( ManagementObject mo in queryCollection )
   {
    if(mo["IPEnabled"].ToString() == "True")
     MessageBox.Show(mo["MacAddress"].ToString());
   }

注意：不知道其命名空间