/// <summary>
/// Get PDF Page Count.
/// </summary>
/// <param name="inputPdfFile"></param>
/// <returns></returns>
public static int GetPdfPageCount(string inputPdfFile)
{
PDFConvert converter = new PDFConvert();
converter.RedirectIO = true;
converter.ThrowOnlyException = true; // rethrow exceptions
//gs -q -sPDFname=test.pdf pdfpagecount.ps
List<string> gsArgs = new List<string>();
gsArgs.Add("-gs");
gsArgs.Add("-dNOPAUSE");
gsArgs.Add("-dQUIET");
gsArgs.Add("-dBATCH");
gsArgs.Add("-sPDFname=" + inputPdfFile);
gsArgs.Add("Library/pdfpagecount.ps");
int pageCount = 0;
using (StringWriter writer = new StringWriter())
{
try
{
converter.StdOut = writer;
if (converter.Initialize(gsArgs.ToArray()))
{
pageCount = Int32.Parse(writer.ToString().Replace("%%Pages: ", String.Empty));
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
return pageCount;
}
/// <summary>
/// Merge PDF files.
/// </summary>
/// <param name="inputPdfFiles"></param>
/// <param name="outputPdfFile"></param>
public static void MergePdf(string[] inputPdfFiles, string outputPdfFile)
{
PDFConvert converter = new PDFConvert();
converter.ThrowOnlyException = true; // rethrow exceptions
//gs -sDEVICE=pdfwrite -dNOPAUSE -dQUIET -dBATCH -sOutputFile=out.pdf in1.pdf in2.pdf in3.pdf
List<string> gsArgs = new List<string>();
gsArgs.Add("-gs");
gsArgs.Add("-sDEVICE=pdfwrite");
gsArgs.Add("-dNOPAUSE");
gsArgs.Add("-dQUIET");
gsArgs.Add("-dBATCH");
gsArgs.Add("-sOutputFile=" + outputPdfFile);
foreach (string inputPdfFile in inputPdfFiles)
{
gsArgs.Add(inputPdfFile);
}
if (!converter.Initialize(gsArgs.ToArray()))
{
throw new ApplicationException("Merge PDF failed.");
}
}