Check VPN connection C#

IsVpnConnected.cs

if (NetworkInterface.GetIsNetworkAvailable())
{
    NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();
    foreach (NetworkInterface  Interface in interfaces)
    {
        if (Interface.OperationalStatus == OperationalStatus.Up)
        {
            if ((Interface.NetworkInterfaceType == NetworkInterfaceType.Ppp) && (Interface.NetworkInterfaceType != NetworkInterfaceType.Loopback))
            {
                IPv4InterfaceStatistics statistics = Interface.GetIPv4Statistics();
                MessageBox.Show(Interface.Name + " "  + Interface.NetworkInterfaceType.ToString() + " " + Interface.Description);
            }
            else
            {
                MessageBox.Show("VPN Connection is lost!");
            }
        }
    }
}