how to use sub report in rdlc
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hi to all i want to use a sub report in rdlc i use a store procedure for data sourse of subreport that no contain any parameter and when i want to run main reort i get this error!!!!? An error occurred during local report processing. Value cannot be null. Parameter name: value i dont have any parameter in my sub report and this errot occuered when i have sub report in main report. my main report is ok. thank for any help