Data.DB.TDataSet.BeforeCancel
Delphi
property BeforeCancel: TDataSetNotifyEvent read FBeforeCancel write FBeforeCancel;
C++
__property TDataSetNotifyEvent BeforeCancel = {read=FBeforeCancel, write=FBeforeCancel};
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| event | public | Data.DB.pas Data.DB.hpp |
Data.DB | TDataSet |
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.