C# version: http://code.msdn.microsoft.com/AspNetAlertSessionExpire-c230a148
VB version: http://code.msdn.microsoft.com/AspNetAlertSessionExpire-73692260
Today’s code sample demonstrates how to design a simple user control, which is used to alert the user when the session is about to expired.
We use jQuery, ASP.NET AJAX at client side. In this sample, we add a SessionExpired user control and Script Manager on the Master page. It will display an alert message if user idle for long time, user can choose whether to extend the session before it's expired or not.
For detailed introduction of the sample, please read the documentation at http://code.msdn.microsoft.com/AspNetAlertSessionExpire-c230a148
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