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find method and oncalculate row |
Fri, Dec 11 2015 9:12 AM | Permanent Link |
Ronald | Hi,
It seems like having a Calculated column in a TDataset can interfere with the TDataSet.Find method. I use the find method in the following procedure: function TEdPlanningForm.FindAndPlan(Function:string):boolean; begin Result:=false; tbPlanning.InitFind; tbPlanning.Columns['function'].AsString:=Function; if tbPlanning.Find(false,true) then begin tbPlanning.Update; tbPlanning.Columns['vak1'].AsInteger:=1; tbPlanning.Save; result:=true; end; end; That works fine, until I use the following tbPlanning.CalculateRow function. Then the find method works correct the fisrt time I call it, but if I call it again it can not find the row. It seems like this CalculateRow interferes, what do I overlook? procedure TEdPlanningForm.tbPlanningCalculateRow(Sender: TObject; Column: TDataColumn); var t1, TempInt,CurValue :integer; begin TempInt:=0; for t1:=1 to 24 do begin CurValue:=tbPlanning.Columns['vak'+IntToStr(t1)].AsInteger; if (CurValue<>0) and (CurValue<>PauzeTijdVak) then inc(TempInt); end; tbPlanning.Columns['urenvandaag'].AsInteger:=TempInt; end; Thanks, Ronald |
Sat, Dec 12 2015 3:09 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. timyoung@elevatesoft.com | Ronald,
<< It seems like having a Calculated column in a TDataset can interfere with the TDataSet.Find method. >> Yeah, the OnCalculateRow event is firing when the dataset is in dsFind mode. This is now fixed for 2.04, but here's the hot fix: WebData unit: procedure TDataRow.ValueChanged(Index: Integer); var TempColumn: TDataColumn; begin TempColumn:=FDataSet.Columns[Index]; if (not ((FDataSet.State=dsFind) or FDataSet.Calculating or TempColumn.Calculated)) then <<< Change to this !!!!! FDataSet.CalculateRow(TempColumn); FDataSet.RowChanged(TempColumn); end; Tim Young Elevate Software www.elevatesoft.com |
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