public List <Image> pdfToImage(string pdfFilePath, int dpi, float resModifier)
{
// Create a PDF converter instance by loading a local file
PdfImageConverter pdfConverter = new PdfImageConverter(pdfFilePath);
// Set the dpi, the output image will be rendered in such resolution
pdfConverter.DPI = dpi;
// the output image will be rendered to grayscale image or not
pdfConverter.GrayscaleOutput = true;
// open and load the file
using (PdfSharp.Pdf.PdfDocument inputDocument = PdfReader.Open(pdfFilePath, PdfDocumentOpenMode.Import))
{
List <Image> tempImagePdfPages = new List <Image>();
// process and save pages one by one
for (int i = 0; i < inputDocument.Pages.Count; i++)
{
PdfSharp.Pdf.PdfPage currentPage = inputDocument.Pages[i];
/*// Create instance of Ghostscript wrapper class.
* GS gs = new GS();*/
/*int widthPdfPage = Convert.ToInt32(currentPage.Width.Point);
* int heightPdfPage = Convert.ToInt32(currentPage.Height.Point);*/
int widthPdfPage = Convert.ToInt32(currentPage.Width.Point * resModifier);
int heightPdfPage = Convert.ToInt32(currentPage.Height.Point * resModifier);
// Convert pdf to png in customized image size
Image image = pdfConverter.PageToImage(i, widthPdfPage, heightPdfPage);
tempImagePdfPages.Add(image);
}
pdfConverter.Dispose();
return(tempImagePdfPages);
}
}
public void Dispose()
{
_pdfImageConverter.Dispose();
// other dispose
}
