The page object is created (based on the .aspx file).
The page life cycle begins, and the Page.Init and Page.Load events fire.
All other control events fire.
The data source controls perform any updates. If a row is being updated, the Updating
and Updated events fire. If a row is being inserted, the Inserting and Inserted events fire.
If a row is being deleted, the Deleting and Deleted events fire.
The Page.PreRender event fires.
The data source controls perform any queries and insert the retrieved data in the linked
controls. The Selecting and Selected events fire at this point.