Data.DB.TDataSet.BeforeOpen

• Up to Parent: TDataSet

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

Data.DB.pas

Data.DB.hpp

Unit: Data.DB Parent: TDataSet

Delphi

property BeforeOpen: TDataSetNotifyEvent read FBeforeOpen write FBeforeOpen;

C++

__property TDataSetNotifyEvent BeforeOpen = {read=FBeforeOpen, write=FBeforeOpen};

Description

Occurs before an application executes a request to open a dataset.

Write a BeforeOpen event handler to take specific action before an application opens a dataset for viewing or editing. BeforeOpen is triggered when an application sets the Active property to true for a dataset or an application calls Open.

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

See Also

• Data.DB.TDataSetNotifyEvent

• Active

• AfterOpen

• Open

• Opening and Closing Datasets