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Detect open internet connection with C#

Posted on 2007-03-28
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Last Modified: 2013-12-17
I am developing a portable c# windows application using a MSDE and need to syncro to the main database when the laptop is connected to an internet connection.  I dont want the Syncro button to be enabled unless i can detect an open connection.  How do i detect that there is an open internet connection using c#
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Question by:cdempster
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angus_young_acdc earned 500 total points
ID: 18822204
This code will check if you have an open connection :)

 HttpWebRequest req;
            HttpWebResponse resp;
            try
            {
                req = (HttpWebRequest)WebRequest.Create("http://www.google.com");
                resp = (HttpWebResponse)req.GetResponse();

                if (resp.StatusCode.ToString().Equals("OK"))
                {
                    MessageBox.Show("its connected.");
                }
                else
                {
                    MessageBox.Show("its not connected.");
                }
            }
            catch (Exception exc)
            {
                MessageBox.Show("Exception");
            }
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