ExtCtrls > ExtCtrls Assembly Interfaces > IUiDataSet > IUiDataSet.OnBeforeOpen
Sub OnBeforeOpen(Sender: Object; Args: IEventArgs);
Begin
//set of operators;
End Sub OnBeforeOpen;
The Sender parameter returns the component that has generated the event.
The Args parameter determines event parameters.
The OnBeforeOpen event occurs before the data source is opened.
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