I need to convert PDF files to images. If the PDF file is multi-page,I just need one image that contains all of the PDF pages.
Is there an open sou
You can use Ghostscript to convert PDF to images.
To use Ghostscript from .NET you can take a look at Ghostscript.NET library (managed wrapper around the Ghostscript library).
To produce image from the PDF by using Ghostscript.NET, take a look at RasterizerSample.
To combine multiple images into the single image, check out this sample: http://www.niteshluharuka.com/2012/08/combine-several-images-to-form-a-single-image-using-c/#