How to get MAC Address in asp.net

 How to get MAC Address in asp.net

  string MACAdd = GetMACAddress();

  public string GetMACAddress()
    {
        string macAddresses = "";

        foreach (System.Net.NetworkInformation.NetworkInterface nic in System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces())
        {
            if (nic.OperationalStatus == System.Net.NetworkInformation.OperationalStatus.Up)
            {
                macAddresses += nic.GetPhysicalAddress().ToString();
                break;
            }
        }
        return macAddresses;
    }

I got macaddress of my pc using this