FireDAC.Comp.DataSet.TFDDataSet.UndoLastChange
Delphi
function UndoLastChange(AFollowChange: Boolean): Boolean;
C++
bool __fastcall UndoLastChange(bool AFollowChange);
Contents
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| function | public | FireDAC.Comp.DataSet.pas FireDAC.Comp.DataSet.hpp |
FireDAC.Comp.DataSet | TFDDataSet |
Description
Undoes the last modification to the dataset records.
Use UndoLastChange to undo the last modification to the dataset records and remove the change from the dataset change log.
The method is applicable to the datasets working when CachedUpdates is set to True.
If AFollowChange is True, then the current position in the dataset is set to the restored record. Otherwise the position remains unchanged.
To check whether the changed log is not empty, read the UpdatesPending property value. If it is True, then there are changes to undo.
Example
procedure TForm1.btnUndoClick(ASender: TObject);
begin
FDQuery1.UndoLastChange(True);
end;