private static string[] ExtractFiles(string sourceOddFileName, string sourceEvenFileName)
{
var oddFile = new PDFFile(sourceOddFileName);
var oddPageCount = oddFile.GetPageCount();
var evenFile = new PDFFile(sourceEvenFileName);
var evenPageCount = evenFile.GetPageCount();
var filenames = new string[oddPageCount + evenPageCount];
// Extract each page to an individual PDF file
for (var i = 1; i <= oddPageCount; i++)
{
var pageNum = (i * 2) - 1;
filenames[pageNum - 1] = $"temp-page-{pageNum}.pdf";
oddFile.ExtractPages(i, i, filenames[pageNum - 1]);
}
for (var i = 1; i <= evenPageCount; i++)
{
var pageNum = (i * 2);
filenames[pageNum - 1] = $"temp-page-{pageNum}.pdf";
evenFile.ExtractPages(i, i, filenames[pageNum - 1]);
}
return(filenames);
}