How to check Internet Connectivity on Windows Mobile Application using C#.net code

Question

hi,while writing the code for checking connectivity of a device, i came accross System.Net.NetworkInformation but that didnt work as i am working on windows mobile 6.0 compact framework. then i used the 3.5 framework using

using System.Net;
using System.Web;
using System.IO;

and the code as follows from one of the blogs:

private static HttpWebRequest ConnectWeb(string urlx)
    {

     try
        {
         HttpWebRequest request = (HttpWebRequest)WebRequest.Create(new Uri(urlx));
         request.ContentType = @"application/octet-stream";
         request.Credentials = CredentialCache.DefaultCredentials;
         request.Timeout = 6000;
       //  request.Timeout(6000);
         return request;

        } 
     catch (Exception ex)
        {
         MessageBox.Show("CONNECTIONPROBLEM");
         return null;
        }
    }


    private  bool downloadTest()
    {

        Stream stream;
        HttpWebResponse response;
        HttpWebRequest request =ConnectWeb("http://www.google.com");
        if (request != null)
        {
            try
            {

                using (response = (HttpWebResponse)request.GetResponse())
                {

                    using (stream = response.GetResponseStream())
                    {
                        byte[] data = ReadFully(stream, (int)response.ContentLength);
                        writeByteArrayToFile(data, "data.zip");
                    }
                }
                return true;
                response.Close();
                stream.Close();

            }
            catch (Exception ex)
            {
                MessageBox.Show("CONNECTIONPROBLEM");
                return false;
            }
        }
        return true;
    }

But even then the ReadFully which is used to read the buffer does not work. intellisense does not show that option to be used hence i am confused, what could be the solution to detect device connected to internet

Thank You in Advance