Looking at other posts for this could not find an adequate solution that for my needs. Trying to just get the first page of a pdf document as a thumbnail. This is to be run as a server application so would not want to write out a pdf document to file to then call a third application that reads the pdf to generate the image on disk.
doc = new PDFdocument("some.pdf");
page = doc.page(1);
Image image = page.image;
Thanks.
Download PDFLibNet and use the following code
public void ConvertPDFtoJPG(string filename, String dirOut)
{
PDFLibNet.PDFWrapper _pdfDoc = new PDFLibNet.PDFWrapper();
_pdfDoc.LoadPDF(filename);
for (int i = 0; i < _pdfDoc.PageCount; i++)
{
Image img = RenderPage(_pdfDoc, i);
img.Save(Path.Combine(dirOut, string.Format("{0}{1}.jpg", i,DateTime.Now.ToString("mmss"))));
}
_pdfDoc.Dispose();
return;
}
public Image RenderPage(PDFLibNet.PDFWrapper doc, int page)
{
doc.CurrentPage = page + 1;
doc.CurrentX = 0;
doc.CurrentY = 0;
doc.RenderPage(IntPtr.Zero);
// create an image to draw the page into
var buffer = new Bitmap(doc.PageWidth, doc.PageHeight);
doc.ClientBounds = new Rectangle(0, 0, doc.PageWidth, doc.PageHeight);
using (var g = Graphics.FromImage(buffer))
{
var hdc = g.GetHdc();
try
{
doc.DrawPageHDC(hdc);
}
finally
{
g.ReleaseHdc();
}
}
return buffer;
}
I used to do this kind of stuff with imagemagick (Convert) long ago. There is a .Net Wrapper for that, maybe it's worth checking out : http://imagemagick.codeplex.com/releases/view/30302