In part one of this article Malcolm Sheridan demonstrates how to use the networking features in Silverlight to detect network changes.
For business applications today, having a network connection is almost mandatory. In the past I have worked on applications that required data synchronization when the application was re-connected to the network. Silverlight 3 has some new features that will help you detect network changes and how to react to those changes. These features are wrapped up inside the NetworkChange and NetworkInterface classes.