ASP.NET Page Life Cycle

This is a favourite interview question: “what are the sequence of events in the ASP.NET page life cycle?”

Short answer:

• Init
• Load
• PreRender
• Unload

Long answer:

• PreInit
• Init
• InitComplete
• PreLoad
• Load
• LoadComplete
• PreRender
• SaveStateComplete
• Unload
• Disposed

Short answer with explanation, i.e., what to do when:

• Init – read or initialize control properties
• Load – set properties in controls and establish database connections
• PreRender – make final changes to the contents of the page or its controls
• Unload – do final cleanup work, such as closing open files and database connections, or finishing up logging or other request-specific tasks

References

• ASP.NET Page Life Cycle Overview
• Page Events (System.Web.UI)

23 May 2008 | Software engineering, ASP.NET | Comments