CrystalReportVIewer asking parameters again when click on buttons on toolba

Dear all I am working on an asp .net application in which I am using crystal report for showing reports. In my application everything works fine including the reports. The real problem comes when I start clicking on the crystal report toolbar. If I click on any button on the crystal report tool bar like (Export, next page etc) it is asking parameters again. Is there any way so that that the crystal repot viewer does not ask the parameter that I have already given . I have also given true for the property reuseparametervaluesonrefresh.
crystal report version is 10.5.3700.0
Thank you

Hello Swetha,
It sounds like you're passing your parameter to the CrystalReportViewer object. If you're using the CrystalReportViewer object you'll probably want to switch to passing your parameters on the ReportDocument object instead.
I found this related SAP Business Objects Note: 1215426 - Err Msg: "Missing parameter value" when printing or exporting in VS .NET. Here's the content of the Note in case you can't call it up yourself:
+++++++++++++++++
Symptom
A .NET application uses Crystal Reports for Visual Studio .NET as the reporting development tool.
After the application passes parameters to the report, the report previews successfully.
However, if you click the print or export toolbar button from the viewer,
the following error message appears:
"Missing parameter value"
Why does this error message appear and how do you resolve it?
Resolution
This error message appears because the parameter values are only being passed to the CrystalReportViewer control, and not to the ReportDocument object (engine).
The ReportDocument object (engine) is responsible for passing parameter values when
printing and exporting.
To successfully set the parameter values when you preview, print and export the report,
you must pass the parameter values to the ReportDocument object (engine).
For example, the following code passes parameters to the ReportDocument object (engine):
Dim crReportDocument As CRParams
Dim crParameterFieldDefinitions As ParameterFieldDefinitions
Dim crParameterFieldDefinition As ParameterFieldDefinition
Dim crParameterValues As ParameterValues
Dim crParameterDiscreteValue As ParameterDiscreteValue
crReportDocument = New CRParams()
crParameterFieldDefinitions = crReportDocument.DataDefinition.ParameterFields
crParameterFieldDefinition = crParameterFieldDefinitions.Item("Country")
crParameterValues = crParameterFieldDefinition.CurrentValues
crParameterValues.Clear()
crParameterDiscreteValue = New ParameterDiscreteValue()
crParameterDiscreteValue.Value = "Canada" '1st current value
crParameterValues.Add(crParameterDiscreteValue)
crParameterFieldDefinition.ApplyCurrentValues(crParameterValues)
CrystalReportViewer1.ReportSource = crReportDocument
+++++++++++++++++
Sincerely,
Dan Kelleher

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