Função para recuperar endereço MAC da interface Wlan0 em c#

mac_address.cs

public void ShowNetworkInterfaces(Label label_mac)
        {
            var end_mac="";

            IPGlobalProperties computerProperties = IPGlobalProperties.GetIPGlobalProperties();
            NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
            
            //nics[1] eh a interface wlan0, sendo : nics[1] = eth0, nics[2] = wlan0
            PhysicalAddress address = nics[2].GetPhysicalAddress();
            byte[] bytes = address.GetAddressBytes();
            for (int i = 0; i < bytes.Length; i++)
            {
                    end_mac += bytes[i].ToString("X2").ToString();
            }
            
            //adicionar em uma label
            label_mac.Text = "MAC: " + end_mac;
        }