Crystal Report - Set Selection Formula

Question

When I pass a report to a CrystalReportViewer, I can pass a selection formula:

dim viewer as new CrystalReportViewer

viewer.ReportSource = rpt
viewer.SelectionFormula = <some query string>

In some cases, I do not wish to display the report, instead i want to export directly to PDF file:

Dim file As Stream = rpt.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat)

How do you pass the SelectionFormula in this instance?

For reference, i get the following error at the moment:

ParameterFieldCurrentValueException was caught

Missing parameter values.

Answer 1

好的，所以我自己回答了这个，解决方法是：

rpt.RecordSelectionFormula = <some query string>