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PDF转Jpeg

'创建一个C1PdfDocumentSource对象
Dim pdf As New C1.Win.C1Document.C1PdfDocumentSource()
pdf.LoadFromFile("D:\WinForms.FinancialChart.pdf")
Dim filter As C1.Win.C1Document.Export.JpegFilter = New C1.Win.C1Document.Export.JpegFilter()
filter.FileName = "DefaultDocument.zip"
filter.UseZipForMultipleFiles = True
filter.ShowOptions = False
If filter.ShowOptionsDialog() Then
    pdf.Export(filter)
End If