How to export WinForms PDFViewer document as metafile and save as EMF?
The WinForms 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); } else { 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); g.Dispose();
//Write to file System.IO.FileStream wfile = new System.IO.FileStream("../../Output/Output" + Guid.NewGuid().ToString() + ".emf", System.IO.FileMode.Create); metafileStream.WriteTo(wfile); wfile.Close(); OffScreenDC.ReleaseHdc(); }
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Please find the sample from below link:
https://www.syncfusion.com/downloads/support/directtrac/general/ze/ExportAsMetafileSample698644188
I hope you enjoyed learning about how to export WinForms PDFViewer document as metafile and save as EMF.
You can refer to our WinForms PDF Viewer feature tour page to know about its other groundbreaking feature representations. You can also explore our WinForms PDF Viewer documentation to understand how to create and manipulate data.
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