TDataSet.BeforeOpen TDataSet Top  Occurs before an application executes a request to open a dataset. property BeforeOpen: TDataSetNotifyEvent; Description 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.         © 2003 - 2025 ComponentAce  | .net zip component | barcode for .net | delphi zip component | delphi database Jul 08, 2025