Passing a parameter to a report that appears to be ignored.

Question

I am using VS 2005 and Crystal Reports XI R2
The app I am working on allows users to either email a report as a PDF attachment or preview the report using a CrystalReportViewer. Users select a record number as the report parameter which the app feeds to the report when it calls it.
My problem is that when I use the CrystalReportViewer all the records in the table are reported on, not just the one the parameter refers to. However, there is not a problem when the report is exported to the PDF file. The correct record, and only the correct record is reported on.
The code used for the preview is ...
Private oReport as ReportDocument
Private Sub ConfigureCrystalReports()
        Dim oConnect As IConnectionInfo
        oReport = New ReportDocument()
        Dim reportPath As String = Application.StartupPath & "\" & "Receipts.rpt"
        Try
            oReport.Load(reportPath)
            For Each oConnect In oReport.DataSourceConnections
                oConnect.IntegratedSecurity = True
            Next
            oReport.SetParameterValue("ConstitreceiptDetailsID", "2")
            myCrystalReportViewer.ReportSource = oReport
        Catch ex As Exception
            MsgBox("Error '" & ex.Message & "'")
        End Try
    End Sub
The sub above is called on the load event of the form the CrystalReportViewer is on.
To complicate matters, if I first export the report as a PDF, then view it, it performs perfectly. Only the correct record is shown. Code for this is as below...
Private oReport as ReportDocument
Private Sub ConfigureCrystalReports()
        Dim oConnect As IConnectionInfo
        Dim exportOpts As ExportOptions
        Dim DiskDestOptions As DiskFileDestinationOptions
        Dim strResult As String
        oReport = New ReportDocument()
        Dim reportPath As String = Application.StartupPath & "\" & "Receipts.rpt"
        Try
            oReport.Load(reportPath)
            For Each oConnect In oReport.DataSourceConnections
                oConnect.IntegratedSecurity = True
            Next
            strResult = "C:\Test2.pdf"
            DiskDestOptions = New DiskFileDestinationOptions()
            DiskDestOptions.DiskFileName = strResult
            exportOpts = oReport.ExportOptions
            With exportOpts
                .DestinationOptions = DiskDestOptions
                .ExportDestinationType = ExportDestinationType.DiskFile
                .ExportFormatType = ExportFormatType.PortableDocFormat
            End With
            oReport.SetParameterValue("ConstitreceiptDetailsID", "2")
            oReport.Export()
            myCrystalReportViewer.ReportSource = oReport
        Catch ex As Exception
            MsgBox("Error '" & ex.Message & "'")
        End Try
    End Sub
Clearly I'm doing something wrong with the viewer. If anyone could make any suggestions I would be more than grateful.

Answer 1

Are you using the parameter in your selection formula? If so, see if the following helps:
http://technicalsupport.businessobjects.com/KanisaSupportSite/search.do?cmd=displayKC&docType=kc&externalId=7896863&sliceId=&dialogID=24902374&stateId=1 0 24906112
Regards,
Jonathan