Posted 5 December 2017, 9:04 pm EST
Hello,
Did you assign the sub-report instance ‘subreport1’ to the SubReport control’s Report property, as follows:
controlSubreport.Report = subreport1;
Doing this would assign your sub-report ‘subreport1’ to the SubReport control ‘controlSubreport’ and then the subreport1’s ReportStart event will automatically fire.
Also, I suggest you to take a look at product sample SubReport located at …\Documents\GrapeCity Samples\ActiveReports 9\Section Reports\Layout\SubReport\
If still face any trouble then do let me know.
Thanks,
Ruchir Agarwal