2 years back I came across a very good diagram of ASP.Net Page LifeCycle, which I lost. I tried to find it again many times but couldn't find. Luckily today, I found the updated version of the Diagram (i.e. for ASP.Net 2.0), thanks to Kris van der Mast who posted it on his blog. He has given All credits to the original designer of the diagram: Léon Andrianarivony, but equal amount of credit goes to him as well.