CSharp ile internet bağlantısı var mı yok mu kontrolü

Güzel bir P/Invoke kodu:

    public class InternetCS
    {
        //Creating the extern function...
        [DllImport("wininet.dll")]
        private extern static bool InternetGetConnectedState(out int Description, int ReservedValue);

        //Creating a function that uses the API function...
        public static bool IsConnectedToInternet()
        {
            int Desc;
            return InternetGetConnectedState(out Desc, 0);
        }
    }

Bu da ping atan kod:

static void checkInternetConnExists()
{
    try
    {
        Ping ping = new Ping();
        string sHost = "www.zuppa.com";
        string sResponse = "";
        PingReply pingreply = ping.Send(sHost);
        sResponse += "Address: " + pingreply.Address + "\n";
        sResponse += "Roundtrip Time: " + pingreply.RoundtripTime + "\n";
        sResponse += "TTL (Time To Live): " + pingreply.Options.Ttl + "\n";
        sResponse += "Buffer Size: " + pingreply.Buffer.Length.ToString() + "\n";
        Console.WriteLine(sResponse);
    }
    catch (Exception err)
    {
        Console.WriteLine(err.Message);
    }
}