passing parameter issue in crystalreport

Hi 2 All,

i am export crystal report to pdf and it is working fine but it give me error whenever i pass the parameter at runtime.

Error:

Code:

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Missing parameter values.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Runtime.InteropServices.COMException: Missing parameter values.

Source Error:

Line 29:        'CrystalReportViewer1.ParameterFieldInfo = pram2
Line 30:
Line 31:        report.ExportToStream(ExportFormatType.PortableDocFormat)
Line 32:
Line 33:        Dim m As System.IO.MemoryStream

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and code i am using is:

Code:

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Dim pram1 As New ParameterField
        Dim pram2 As New ParameterFields
        Dim pramval As New ParameterDiscreteValue
        Dim report As New ReportDocument

        pram1.ParameterFieldName = "ProjectID"
        pramval.Value = 44 'Request.QueryString("rpid")
        pram1.CurrentValues.Add(pramval)
        pram2.Add(pram1)          report.Load(Server.MapPath("ProjectTasks.rpt"))
        report.SetDatabaseLogon("aqeel", "aqeel")
        CrystalReportViewer1.ParameterFieldInfo.Add(pram1)
        report.ExportToStream(ExportFormatType.PortableDocFormat)

        Dim m As System.IO.MemoryStream
        m = report.ExportToStream(ExportFormatType.PortableDocFormat)
        report.Close()
        Response.ClearContent()
        Response.ClearHeaders()
        Response.ContentType = "Application/pdf"
        Response.Buffer = True
        Response.BinaryWrite(m.ToArray())
        Response.End()

---

please help me in this issue

take a look at this thread that was resolved previously:

http://www.vbforums.com/showthread.php?t=524736

but this example is about to passing parameter to sub reports but in my case i m not using any subreport....

post #7 of that link shows how to pass a parameter to a report.