Exoprt to HTML from Crystal Report in VB.Net

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.NET2.0

VB

.NET

CrystalReports

Dear Friends,

I am trying to export the data in Crystal Report to HTML but not able to accomplish the same in VB.Net.

 Dim crDiskFileDestinationOptions As New DiskFileDestinationOptions()
 Dim rptRepDocument As New ReportDocument
 Dim conInfo As New ConnectionInfo

rptRepDocument.RecordSelectionFormula = strSelection

mstrExportFilePath = AppTmpPath & "\tmp\" & docno & ".html"
crDiskFileDestinationOptions.DiskFileName = mstrExportFilePath
crExportOptions = rptRepDocument.ExportOptions
With crExportOptions
    .DestinationOptions = crDiskFileDestinationOptions
    .ExportDestinationType = CrystalDecisions.Shared.ExportDestinationType.DiskFile
    .ExportFormatType = CrystalDecisions.Shared.ExportFormatType.HTML40
End With

rptRepDocument.Export()       

When the code reaches the rptRepDocument.Export() then an error occurs saying:-

"Object reference not set to an instance of an object."

The above written code is not the full code but the code where error is coming.

Kindly help me resolve this.

Regards

Varun Sareen