ASP.NET 2.0 Page Event Life Cycle

                             Hi Friends, in this article i will explain about ASP.NET 2.0 Page Life Cycle.

Main Events :

1. OnPreInit

2. OnInit

3. OnInitComplete

4. LoadViewState

5. OnPreLoad

6. OnLoad

7. RaisePostBackEvent

8. OnLoadComplete

9. OnPreRender

10. OnPreRenderComplete

11. SaveViewState

12. OnRender

13. OnUnload

The events occur in the following sequence. Its best to turn on tracing(<% @Page Trace=”true”%>) and track the flow of events :

PreInit – This event represents the entry point of the page life cycle. If you need to change the Master page or theme programmatically, then this would be the event to do so. Dynamic controls are created in this event.

Init – Each control in the control collection is initialized.

Init Complete* - Page is initialized and the process is completed.

PreLoad* - This event is called before the loading of the page is completed.

Load – This event is raised for the Page and then all child controls. The controls properties and view state can be accessed at this stage. This event indicates that the controls have been fully loaded.

LoadComplete* - This event signals indicates that the page has been loaded in the memory. It also marks the beginning of the rendering stage.

PreRender – If you need to make any final updates to the contents of the controls or the page, then use this event. It first fires for the page and then for all the controls.

PreRenderComplete* - Is called to explicitly state that the PreRender phase is completed.

SaveStateComplete* - In this event, the current state of the control is completely saved to the ViewState.

Unload – This event is typically used for closing files and database connections. At times, it is also used for logging some wrap-up tasks.

Detailed Events

1. Constructor

2. Construct

3. TestDeviceFilter

4. AddParsedSubObject

5. DeterminePostBackMode

6. OnPreInit

7. LoadPersonalizationData

8. InitializeThemes

9. OnInit

10. ApplyControlSkin

11. ApplyPersonalization

12. OnInitComplete

13. LoadPageStateFromPersistenceMedium

14. LoadControlState

15. LoadViewState

16. ProcessPostData1

17. OnPreLoad

18. OnLoad

19. ProcessPostData2

20. RaiseChangedEvents

21. RaisePostBackEvent

22. OnLoadComplete

23. OnPreRender

24. OnPreRenderComplete

25. SavePersonalizationData

26. SaveControlState

27. SaveViewState

28. SavePageStateToPersistenceMedium

29. Render

30. OnUnload

For more information see the below link

http://msdn.microsoft.com/en-us/library/ms178472.aspx

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