C# way to detect if wifi or ethernet connection has gone down

Hi

I have  client/Server applications written in c#. I need a good way to detect if the clients wifi or Ethernet connect to the internet has gone down to our server? What would be the best way to do this?

Thank you.
SkyMagicAsked:
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KimputerCommented:
I'd say the best way is to ping the default gateway at the active connection at a regular interval (not too heavy though, maybe every minute or so).
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MlandaTCommented:
A solution for this you can add handlers to the static NetworkAddressChanged and NetworkAvailabilityChanged events implemented by the System.Net.NetworkInformation.NetworkChange class.

see here:
http://www.ultradevelopers.net/Blog/20
http://learningcsharpe.blogspot.com/2010/06/detect-changes-in-network-connectivity.html
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SkyMagicAuthor Commented:
Thank you.
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