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Passing parameters to report from a program

Passing parameters to report from a program

Passing parameters to report from a program

I am using Crystal Reports with Visual Studio 2017. I have written a few reports and all work well in Crystal. However I need to have the parameters validated before printing and to do this I have written a program in C#. I use a button click event to fire the report and my code is as follows:

private void btnPrint_Click(object sender, RoutedEventArgs e)
string reportPath = @"C:\qpaq\reports\LedegerTransactionReport.rpt";
CRLedgerTransactionReport ledgerTransactionReport = new CRLedgerTransactionReport();

ledgerTransactionReport.SetParameterValue("Start Account Number", fromAccNumber);
ledgerTransactionReport.SetParameterValue("End Account Number", toAccNumber);
ledgerTransactionReport.SetParameterValue("Start Date", fromDate);
ledgerTransactionReport.SetParameterValue("End Date", toDate);


CrystalReportsViewer crystalReportsViewer = new CrystalReportsViewer();
[highlight #FCE94F] crystalReportsViewer.ViewerCore.ReportSource = ledgerTransactionReport;[/highlight]

1. When I run the program I get the Crystal "Enter Parameter Values" window appear but the parameters are not populated
2. When I do a trace on the code,I can see the values entered but a trace on the last line,.ReportSource, HasRecords says
" HasRecords threw an exception of type 'CrystalDecision.CrystalReports.Engine.ParameterField(CurrentValueException"
3. I cant understand why the parameters are not being passed, not sure if there is a problem with my code.
4. The parameters above are exactly as created in the Crystal report

I would like to be able run thereport from the program and not have Crystal's "Enter Parameter Values" window displayed

Please assist,
Many thanks

RE: Passing parameters to report from a program


HI All,

I have been trying unsucessfully to resolve this error for the past two weeks that I get when trying to pass parameters from my C# program to Crystal reports using C# WPF viewer. I tried it also with a report that does not have parameters and the same error occurs.. My code is above

Does anyone know where I can get access to a complete program listing just to compare idf I am missing anything in my code. I have been searching on the internet for a few days for some guidance, but cannot find anything that is complete

My reports work well if I run them directly in the viewer however, I need to validate certain parameters before printing hence the need to pass the parameters via code

Any assistance will be most appreciated, Many thanks


RE: Passing parameters to report from a program

Thank you Ian, I have as well, just thought someone may have experienced a similar problem,

RE: Passing parameters to report from a program

Thank you, I resolved the problem, somewhere in my code i had instantiaited the viewer twice, the parameter were being passed to the second viewer.

Been looking at that code for two weeks before seeing the problem

Many thanks

Regards, bhuven

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