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How to export PDF document as metafile and save as EMF?

Platform: WinForms |
Control: PdfViewer

The PDF viewer for WF allows the user to export pages of the PDF document as Metafile, which is a vector format which does not lose quality when zooming.

Directly saving the Metafile image to disk with *.emf extension will save the resultant in scalar format which would result in quality loss. Here in the KB we have explained the way to save the metafile in *.emf format, which does not lead to quality loss.


private PdfViewerControl viewer = new PdfViewerControl();

viewer.Load("../../Data/HTTP Succinctly.pdf");

Metafile[] images ;


            if (allpageBtn.Checked)


                images = this.viewer.ExportAsMetafile(0, viewer.PageCount - 1);




                images = this.viewer.ExportAsMetafile((int)fromPage.Value - 1, (int)toPage.Value - 1);



            foreach (Metafile image in images)



                //Create new MemoryStream

                System.IO.MemoryStream metafileStream = new System.IO.MemoryStream();

                System.Drawing.Graphics OffScreenDC = System.Drawing.Graphics.FromHwndInternal(IntPtr.Zero);

                System.Drawing.Imaging.Metafile wrappedMetaFile = new System.Drawing.Imaging.Metafile(metafileStream, OffScreenDC.GetHdc(), System.Drawing.Imaging.EmfType.EmfOnly);


                //Draw image

                System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(wrappedMetaFile);

                g.DrawImage(image, 0, 0);



                //Write to file

                System.IO.FileStream wfile = new System.IO.FileStream("../../Output/Output" + Guid.NewGuid().ToString() + ".emf", System.IO.FileMode.Create);






Please find the sample from below link:


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