我有这个Crystal Reports pdf导出 . 这有多个页面，每个页面都是一个候选页面 . 我需要从每个页面将此报告破解为单个pdf . 在该页面上有两个字段（候选和名称），它们是新pdf文件名的一部分 . 如何从pdf中获取字段值 . 字段列表为空，count为零 . 更清楚：文件名必须从每个页面上两个字段的字段值中删除 .
Using reader As PdfReader = New PdfReader(report.ExportToStream(ExportFormatType.PortableDocFormat)) ', filename)) 'pdfTemplatePath)
Dim copy As PdfCopy
Dim kandidaatnummer As String
Dim naam As String
For i As Integer = 1 To reader.NumberOfPages
' Filter the dataset for the candidate.
dataSet.Tables("ReportData").DefaultView.RowFilter = String.Format("Kandidaatnummer = '{0}'", processedCandidates(i - 1))
' Create a new dataset for the candidate.
Dim ds As New DataSet()
ds.Tables.Add(dataSet.Tables("ReportData").DefaultView.ToTable("ReportData"))
Dim d1 As Document = New Document()
Dim newFilename As String = String.Format("{0}{1}", tempFolder, FileNameHelper.GetFileName(ds.Tables("ReportData"), "pdf", "DeelRapportage", ReportType.DeelrapportageSubrapporten))
copy = New PdfSmartCopy(CType(d1, Document), New FileStream(newFilename, FileMode.Create))
d1.Open()
copy.AddPage(copy.GetImportedPage(reader, i)) ' reader.NumberOfPages - i + 1))
d1.Close()
Next
End Using