Bitcoin_QR_Popup.Form1.GetMacAddress C# (CSharp) Метод

        private string GetMacAddress()
        {
            const int MIN_MAC_ADDR_LENGTH = 12;
            string macAddress = "";
            long maxSpeed = -1;

            foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
            {
                string tempMac = nic.GetPhysicalAddress().ToString();
                if (nic.Speed > maxSpeed && !String.IsNullOrEmpty(tempMac) && tempMac.Length >= MIN_MAC_ADDR_LENGTH)
                {
                    maxSpeed = nic.Speed;
                    macAddress = tempMac;
                }
            }
            return macAddress;
        }