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    TDataSource.OnDataChange

    Called whenever data changes in the current record.

    Declaration

    Source position: db.pas line 2162

    published property OnDataChange: TDataChangeEvent;

    Description

    OnDatachange is called whenever a field value changes: if the Field parameter is set, a single field value changed. If the Field parameter is Nil, then the whole record changed: when the dataset is opened, when the user scrolls to a new record. This event handler can be set to react to data changes: to update the contents of non-DB-aware controls for instance. The event is not called when the datasource is not enabled.

    See also

    Name Description
    TDatasource.OnUpdateData Called whenever the data in the dataset must be updated.
    TDatasource.OnStateChange Called whenever the state of the dataset changes.
    TDataset.AfterScroll Event triggered after the cursor has changed position.
    TField.OnChange Event triggered when the field's value has changed.
    TDatasource.Enabled Enable or disable sending of events.