TIWCGJQButton and SendStream Failure

[jandekkers]

Hi

from within TIWCGJQButton this fails with ContentStream already exists.

Code: Select all

procedure TformPortalCensus.IWImageButtonDownLoadCensusCSVJQEventsClick(Sender: TObject; AParams: TStringList);
Var
 MemoryStream : TMemoryStream;
begin
        code for populatestream deleted here
        WebApplication.SendStream(MemoryStream, True, '', MakeCensusFileName(PlanId, LoadedCensusForYear,''));
end;

when this is called from within a TMS Button it works as expected WebApplication.SendStream(MemoryStream, True, '', MakeCensusFileName(PlanId, LoadedCensusForYear,''));

How Can this be fixed ?

Jan

[Jorge Sousa]

Hi

The problem is not the button, is the default event mode.

By default, most of cg events are ajax (async) events.

And in some IW versions, WebApplication.SendStream only works if it's a full post event.

So you have to change OnClick.Ajax=False.