Assembly: System.Web (in system.web.dll)
The Page that raised the event.
An EventArgs that contains the event data.
The OnPagePreLoad sets the RequiresDataBinding property to true in cases where the HTTP request is a postback and view state is enabled but the data-bound control has not yet been bound. This scenario is common with controls such as Wizard and MultiView where the visibility of the control is changed at run time.