The ASP.NET Page Object Model
One Day in the Life of an ASP.NET Web Page
Dino Esposito
Wintellect
August, 2003
Applies to:Microsoft® ASP.NET
Summary: Learn about the eventing model built around ASP.NET Web pages and the various stages that a Web page experiences on its way to HTML. The ASP.NET HTTP runtime governs the pipeline of objects that transform the requested URL into a living instance of a page class first, and into plain HTML text next. Discover the events that characterize the lifecycle of a page and how control and page authors can intervene to alter the standard behavior. (6 printed pages)
http://msdn.microsoft.com/asp.net/?pull=/library/en-us/dnaspp/html/aspnet-pageobjectmodel.asp#aspnet-pageobjectmodel_topic2