一段獲得網卡地址的代碼,可以用來做軟件許可證用.

ManagementClass mcMac = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection mocMAC = mcMac.GetInstances();
foreach(ManagementObject m in mocMac)
{
 if((bool)m["IPEnabled"])
 {
  return m["MacAddress"].ToString();
 }
}