asp.net runtime impersonation

http://blogs.microsoft.co.il/blogs/gilf/archive/2010/09/07/back-to-basic-asp-net-runtime-impersonation.aspx

Update panel not showing errors in ASP.NET 3.5

http://stackoverflow.com/questions/1364907/update-panel-not-showing-errors-in-asp-net-3-5


http://www.wagnerdanda.me/2010/01/asp-net-ajax-updatepanel-error-exception-handling-the-simple-way/