public static bool Print(PDocument pDocument)
{
    if (File.Exists(pDocument.FilePath))
    using (var pdfDoc = PdfDocument.Load(pDocument.FilePath))
    {
        using (var printDoc = pdfDoc.CreatePrintDocument())
        {
            printDoc.PrinterSettings = pDocument.PrinterSettings;
            int copies = Int32.Parse(pDocument.copiesCount);
            printDoc.PrinterSettings.Copies = (short)copies;
            printDoc.DocumentName = pDocument.FileName;
            printDoc.Print();
            return true;
        }
    }
    return false;
}

BinaryFormatter binFormat = new BinaryFormatter();
using (FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate))
{
    PrinterSettings printerSettings = (PrinterSettings)binFormat.Deserialize(fs);
    return printerSettings;
}