I want to connect to a TDataset but my TdbChart it's display a single record !

[Fab]

Hello,

I would like to dynamically create a serie to connect to a dataset :
query = select myfield,count(myfield) from XXX group by 1

The code is very simple :

Code: Select all

procedure TForm26.Button1Click(Sender: TObject);
begin
  DBChart1.AddSeries(TPieSeries);

  DBChart1.Series[0].DataSource := Q_TABLEFX;  
  DBChart1.Series[0].YValues.ValueSource := 'SERIE1';
  DBChart1.Series[0].XLabelsSource := 'GROUPE1';
end;

In an empty project it's work fine. It's display my (multiple record) dataset.


But in my 7 millions of line of code program with the same code my TDBChart display a Single record like this :

UniqueRecord.png (92.81 KiB) Viewed 11622 times

and result :

UniqueRecord_result.png (62.4 KiB) Viewed 11622 times

But I want = If I edit (in runtime) my TDBChart to connect to a dataset it's work :

Dataset_result.png (260.09 KiB) Viewed 11622 times

I have tried uses order without change.

Why my TDBChart display it datasource as "Single record" and not as a (multi-record) dataset ?


In other words of to force a dataset or a single record dataset ?

PS : I use Teechart Pro 2023.38.230607 VCL with Delphi 11.3

[Fab]

Ok I have understand my mistake.
It's if you connect DBChart1.Series[0].DataSource to a TDatasource component (connected to a Tdataset) !
Strangely in this case it display a "single record" ?!