GdPicture.NET作為知名的圖形處理控件，在圖像掃描之后的導出轉換為PDF格式時的表現尤為出色，本文將以將單頁或多頁TIFF文件轉換成PDF格式為例，繼續介紹GdPicture.NET的強大圖形處理功能。

》》》下載GdPicture.NET最新試用版

代碼示例如下：

      Dim oGdPictureImaging As New GdPicture.GdPictureImaging
      Dim imageID As Integer = oGdPictureImaging.CreateGdPictureImageFromFile("C:\MyTiff.TIF")
      If imageID <> 0 Then
         Dim oGdPicturePDF As New GdPicturePDF
         oGdPicturePDF.NewPDF(True) ' set False to create non PDF/A
         oGdPicturePDF.AddImageFromGdPictureImage(imageID, False, True) 'Adds the first page
         If oGdPictureImaging.TiffGetPageCount(imageID) > 1 Then
            For i As Integer = 2 To oGdPictureImaging.TiffGetPageCount(imageID)'Adds other pages, if any
               oGdPictureImaging.TiffSelectPage(imageID, i)
               oGdPicturePDF.AddImageFromGdPictureImage(imageID, False, True)
            Next
         End If
         oGdPictureImaging.ReleaseGdPictureImage(imageID)
         oGdPicturePDF.SaveToFile("c:\mypdf.pdf")
         oGdPicturePDF.CloseDocument()
      End If