NoData

rbuser

Hi,

I have report (with Header, Footer, Group(s), Detail band, ...)
connected to a Dataset. Is it possible, when there are no data, to only
print Header and Footer ?

Thank you

--
Arnaud

Site : http://www.mesnews.net

nicocizik

Hi Arnaud,

If you set the Report.NoDataBehaviors to ndBlankReport, all
non-data-aware components will display as normal in a no-data scenario.

See the TppCustomReport.NoDataBehaviors topic in the RB help for more
information.

Then you could use the OnNoData event to hide anything else you do not
want showing up in this situation (Detail band components, Groups, etc.).

--

rbuser

Nico Cizik (Digital Metaphors) à écrit dans le forum
"digital-metaphors.public.reportbuilder.general" :




Ok, I try but don't work :-(

I modify sample 111 in directory Demos\1. Reports :
- unit dm0111, I set ppReport1.NoDataBehaviors = ndBlankReport
- tblBioLife : I put "Length_In=-1" in Filter, and set Filtered=true

=> now, if I preview report, I have a report with a yellow "Header
Band", blue "Detail band" and magenta "Footer band".

I want to hide Detail and Footer, so on OnNoData event in Calc, I write
:
Detail.Visible := false;
Footer.Visible := false;

If I preview, I always have the Detail and Footer band. What is the
problem ?

--
Arnaud

Site : http://www.mesnews.net

nicocizik

Hi Arnaud,

Yes, it appears the OnNoData fires too late to actually alter the report
output. Try checking for and empty dataset in the BeforePrint event
instead.

procedure TForm1.ppReport1BeforePrint(Sender: TObject);
begin
if (ppReport1.DataPipeline.BOF and ppReport1.DataPipeline.EOF) then
begin
ppDetailBand1.Visible := False;
ppFooterBand1.Visible := False;
end;

end;

--

rbuser

Nico Cizik (Digital Metaphors) a exposé le 16/06/2017 :




OK thank you, it's ok with this methode.

--
Arnaud

Site : http://www.mesnews.net