private static byte[] Merge(Collection <byte[]> pdfCollection, Document document, string script)
{
if (pdfCollection == null)
{
throw new ArgumentNullException("pdfCollection");
}
// get a list of readers for the collection of bytes passed in
var readers = pdfCollection.Where(b => b != null).Select(b => new PdfReader(b)).ToList();
var totalPages = readers.Sum(r => r.NumberOfPages);
byte[] mergedPdf;
using (var stream = new MemoryStream())
{
var writer = new PdfSmartCopy(document, stream);
document.Open();
var currentPage = 1;
readers.ForEach(r => { currentPage = Append(writer, r, document, currentPage, totalPages); });
if (!string.IsNullOrEmpty(script))
{
var action = PdfAction.JavaScript(script, writer);
writer.AddJavaScript(action);
}
document.Close();
stream.Flush();
mergedPdf = stream.ToArray();
}
return(mergedPdf);
}
