获取网卡MAC地址

        获取网卡MAC地址

        public string returnMAC()

        {

            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");

            ManagementObjectCollection moc2 = mc.GetInstances();

            foreach (ManagementObject mo in moc2)

            {

                if ((bool)mo["IPEnabled"] == true)

                    return mo["MacAddress"].ToString();

                mo.Dispose();

            }

            return "";

        }