ASP.NET 2.0 General Page Life-cycle Stages

• Page request
• Start
• Page initialization
• Load
• Validation
• Postback event handling
• Rendering
• Unload

Article: http://msdn.microsoft.com/en-us/library/ms178472%28VS.85%29

http://msdn.microsoft.com/en-us/library/ms178473(VS.85).aspx