Use this code when you're developing Web pages and you need to export Crystal Reports to PDF without creating their own files. The undocument FormatEngine property of ReportDocument class (you can see it using ObjectBrowser or ILDASM) gets the job done:
Private Sub ExportToPDF(ByVal oRpt As ReportDocument)
Dim crExportOptions As ExportOptions
crExportOptions = oRpt.ExportOptions
With crExportOptions
.FormatOptions = New PdfRtfWordFormatOptions()
.ExportFormatType = ExportFormatType.PortableDocFormat
End With
Dim req As ExportRequestContext = New ExportRequestContext()
req.ExportInfo = crExportOptions
Dim st As System.IO.Stream
st = oRpt.FormatEngine.ExportToStream(req)
Response.ClearContent()
Response.ClearHeaders()
Response.ContentType = "application/pdf"
Dim b(st.Length) As Byte
st.Read(b, 0, st.Length)
Response.BinaryWrite(b)
Response.End()
End Sub
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