procedure TForm1.Form1Create(Sender: TObject);
begin
   Database.AutoTransactions := False;
   DataSet1.Open;
end;

procedure TForm1.DataSet1RowChanged(Sender: TObject; Column: TDataColumn);
var
   TempStr: String;
   Price: Double;
   Num: Integer;
   Ds: TDataSet;
begin
   LogOutput('OnRowChanged');
   if not Assigned(Column) then Exit;
   TempStr := Column.Name;
   Ds := TDataSet(Sender);
   if SameText(TempStr, 'price')or
      (SameText(TempStr, 'num')) then
   begin
      Price := Ds.Columns['price'].AsFloat;
      Num := Ds.Columns['num'].AsInteger;
      Ds.Columns['amount'].AsFloat := Price*Num;
   end;
end;

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 Comments

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The reason why the OnRowChanged event isn't firing is because EWB prevents recursive triggering of the data notification events. In this case, the TDataSet instance is asking the data-bound controls to update themselves via the cmUpdateRow notification event. Therefore, any updates to any data that occurs as a result will not trigger the OnRowChanged event. For most notifications, this is the desirable state. But, it just so happens that the cmUpdateRow notification cannot (directly) result in recursive data notification events, so it is safe to turn off the recursive check in such cases.

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 Resolution

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Fixed Problem on 1/12/2017 in version 2.06 build 1

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 Products Affected

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Elevate Web Builder
Elevate Web Builder Trial