To check for a network connection in .NET 2.0 use this:

System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable()

To monitor a change in IP address or a change in network availability, use the events from the NetworkChange class:

System.Net.NetworkInformation.NetworkChange.NetworkAvailabilityChanged

System.Net.NetworkInformation.NetworkChange.NetworkAddressChanged


Read a great book: Good to Great: Why Some Companies Make the Leap… and Others Don’t by Jim Collins