Asp.Net Page LifeCycle in 3 stages

Its hard to remember all the stages of an Asp.Net page’s life-cycle. So being able to group them into 3 stages is a useful way for looking at them:

1. Initialisation
2. Event Handler Execution
3. Rendering

Initialization

1. PreInit (Controls are available. Ids are set)
2. Init
3. InitComplete

Event Handler Execution

1. Preload
2. Load (During a post-back, control properties are available here and loaded from view state)
3. Controls events (If a post-back call, events are fired and validation is performed by calling the Validate methods on each validator control – setting the IsValid property)
4. Load Complete

Rendering

1. PreRender (databind method is called here)
2. SaveState
3. Render
4. Unload

More information: MSDN: ASP.Net Page Life Cycle