Occurs before an application scrolls from one record to another.
Syntax:
property BeforeScroll: TDataSetNotifyEvent;
Description:
Write a BeforeScroll event handler to take specific action immediately before an
application scrolls to another record as a result of a call to the First, Last, MoveBy, Next, Prior,
FindKey, FindFirst, FindNext, FindLast, FindPrior, and Locate methods. BeforeScroll is
called before all other events triggered by these methods and any other methods that switch from record
to record in the dataset.