Main Report Generation based on subreport

Aug 19 2013 1:45 AM

Hi,
I have main report and subreport RDLC files.I used parameter passed from main report to sub report.I want to generate main report if subreport contains data.If sub report doesn't contains any data,then the main report shouldn't be generated or if possible give alert such as"Report doesn't contains any data".Can anyone help me to do this?