问题
is there a free C# library (.dll) to convert PDF to images ?
I tried this one :
https://code.google.com/p/lib-pdf/
But it doesn't work, I got this error :
Could not load file or assembly 'libpdf.DLL' or one of its dependencies. The specified module could not be found.
iTextSharp doesn't implement a function like that either..
EDIT:
I didn't use ghost scrpit because you had to install it before on the computer
But now I found a solution : if you load manualy the dll it works
http://ghostscriptnet.codeplex.com/discussions/465418
public void PDFToImage(string file, string outputPath, int dpi)
{
string path = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
Ghostscript.NET.Rasterizer.GhostscriptRasterizer rasterizer = null;
Ghostscript.NET.GhostscriptVersionInfo vesion = new Ghostscript.NET.GhostscriptVersionInfo(new Version(0, 0, 0), path + @"\gsdll32.dll", string.Empty, Ghostscript.NET.GhostscriptLicense.GPL);
using (rasterizer = new Ghostscript.NET.Rasterizer.GhostscriptRasterizer())
{
rasterizer.Open(file, vesion, false);
for (int i = 1; i <= rasterizer.PageCount; i++)
{
string pageFilePath = Path.Combine(outputPath, Path.GetFileNameWithoutExtension(file) + "-p" + i.ToString() + ".jpg");
Image img = rasterizer.GetPage(dpi, dpi, i);
img.Save(pageFilePath, ImageFormat.Jpeg);
}
rasterizer.Close();
}
}
来源:https://stackoverflow.com/questions/22505502/convert-pdf-to-jpg-images-without-using-a-specific-c-sharp-library