PDFsharp and MigraDoc Wiki. Images and external PDF forms; PDF Output File. Convert text to path.
Active8 months ago
How to export a PDF page as an image using PDFsharp .NET library, for pixel level manipulation?
For example, something like, System.Drawing.BitMap.GetPixel()
I am trying to find out empty area (all white, or of any colour) inside a PDF document, to write some graphics / image.
09, June 2010:
I have tried this, but it is not working.
Why the following code is not working as expected?
Bitmap.GetPixel always returns 0.
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vi.su.vi.su.Pdfsharp Convert Image To Pdf C#
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1 Answer
The answer can be found in the PDFsharp FAQ list:http://www.pdfsharp.net/wiki/PDFsharpFAQ.ashx#Can_PDFsharp_show_PDF_files_Print_PDF_files_Create_images_from_PDF_files_3
C# Pdfsharp Convert Pdf To Image
PDFsharp creates PDF files, but it cannot render them.
The call
does not initialize any bits of the bitmap and does not copy anything from the Graphics object except for the DPI setting of the Graphics object. Graphics objects draw things, but they do not remember what they have drawn and they cannot re-create the drawings in a call to
new Bitmap(...)
. This does not work with the Graphics class from Microsoft, this does not work with the XGraphics class from PDFsharp either.The XGraphics class from PDFsharp can be used to draw on PDF pages and it can be used to draw on bitmaps, on a printer, or on the screen - it can draw on PDF pages and on any DC you can get from Windows. Same goes for MigraDoc.
So if you want to create PDF files and bitmaps with the same contents, PDFsharp and MigraDoc can help.
So if you want to create PDF files and bitmaps with the same contents, PDFsharp and MigraDoc can help.
But PDFsharp does not provide any way to render a PDF page to a bitmap.
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