One of the new SL3 features is the ability to test if there is a network connection currently active. This complements the out of browser experience by letting an app use local (isolated) storage when off-line, and when a network connection becomes available, upload data to a central server.

To be informed when the network changes:

System.Net.NetworkInformation.NetworkChange.NetworkAddressChanged += (sender, e) => txtNetStatus.Text = "Network available: " + System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable().ToString();

This example uses a lambda expression as a shortcut (rather than having a separate method); when the network status changes, we set the text of txtNetStatus to 'Network available: True' or 'Network available: False' depedning on the (boolean) result of GetIsNetworkAvailable().

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