Data.DB.TDataSet.BeforeCancel

• Up to Parent: TDataSet

[–] Properties Type: event Visibility: public Source:

Data.DB.pas

Data.DB.hpp

Unit: Data.DB Parent: TDataSet

Delphi

property BeforeCancel: TDataSetNotifyEvent read FBeforeCancel write FBeforeCancel;

C++

__property TDataSetNotifyEvent BeforeCancel = {read=FBeforeCancel, write=FBeforeCancel};

Description

Occurs before an application executes a request to cancel changes to the active record.

Write a BeforeCancel event to take specific action before an application carries out a request to cancel changes. BeforeCancel is called by the Cancel method before it cancels a dataset operation such as Edit, Insert, or Delete.

An application might use the BeforeCancel event to record a user's changes in an undo buffer.

BeforeCancel is an event handler of type Data.DB.TDataSetNotifyEvent.

See Also

• Data.DB.TDataSetNotifyEvent

• AfterCancel

• Delete

• Edit

• Insert