PDF Generation

        private void GenerateDocuments()
        {
            if (_haveTax)
            {
                ActGenerator ag = new ActGenerator(this);
                InvoiceGenerator ig = new InvoiceGenerator(this);
                _act = ag.Generate();
                _invoice = ig.Generate();
            }
            else
            {
                NoticeGenerator ng = new NoticeGenerator(this);
                _notice = ng.Generate();
            }
        }


using System;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Windows.Forms;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace PASSS
{
    class ActGenerator : IDocumentGenerator
    {
        private readonly DocumentHandler _handler;

        // Fonts
        private static BaseFont _baseTahoma;
        private static Font _tahomaBold;
        private static Font _tahoma;
        private static Font _tahoma16Bold;
        private static Font _tahomaSmall;

        // Files
        private iTextSharp.text.Document _actDoc;
        private PdfWriter _actWriter;

        // Overall sum row
        private PdfPRow _overallSumRow;

        public ActGenerator(DocumentHandler handler)
        {
            _handler = handler;

            PrepareFonts();
        }

        // Prepare fonts
        private static void PrepareFonts()
        {
            _baseTahoma = BaseFont.CreateFont("c:/windows/fonts/tahoma.ttf", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
            _tahomaBold = new Font(_baseTahoma, 10, Font.BOLD);
            _tahoma = new Font(_baseTahoma, 10, Font.NORMAL);
            _tahoma16Bold = new Font(_baseTahoma, 18, Font.BOLD);
            _tahomaSmall = new Font(_baseTahoma, 8, Font.NORMAL);
        }

        public FileInfo Generate()
        {
            DateTime dateOfDoc = _handler.DocData.DocumentDate;
            string actFileName = Settings.Default.PDFPath + "\\" + "Бонус_№_" + _handler.DocData.DocumentNum + "_АКТ_от_" + dateOfDoc.ToString("dd.MM.yyyy") + ".pdf";

            try
            {
                _actDoc = new iTextSharp.text.Document(PageSize.A4, 45, 45, 45, 45);
                _actWriter = PdfWriter.GetInstance(_actDoc, new FileStream(actFileName, FileMode.Create));
            }
            catch (IOException)
            {
                MessageBox.Show(Resources.DocumentIsOpenedError, Resources.ErrorHeaderForDialogs, MessageBoxButtons.OK, MessageBoxIcon.Error);
                return new FileInfo(actFileName);
            }

            string header = "Акт  № " + _handler.DocData.DocumentNum + " от " + dateOfDoc.ToString("dd.MM.yyyy");

            HeaderFooter hfEvent = new HeaderFooter();
            hfEvent.SetHeader(header);
            _actWriter.PageEvent = hfEvent;
            _actDoc.Open();

            // Globus Juridical Address
            AddGlobusJurSection();

            // Title
            Paragraph title = new Paragraph();
            title.SpacingBefore = 10;
            title.SpacingAfter = 10;
            title.Font = _tahoma16Bold;
            title.Alignment = Element.ALIGN_CENTER;
            title.Add(header);
            _actDoc.Add(title);

            // Debitor and Kreditor numbers
            AddKreDebNumbers();

            // Retoure positions table
            AddPositionsTable();

            if (_actWriter.GetVerticalPosition(true) < 100)
            {
                _actDoc.NewPage();
                AddInvoiceEmptyTableHeader();
                _actDoc.Add(Chunk.NEWLINE);
            }

            // Sum by words and agreement
            AddSumAndAgreement();

            // Footer
            AddInvoiceSignatures();

            AddGlobusBankDetails();

            // Save document
            _actDoc.Close();

            return new FileInfo(actFileName);
        }

        private void AddGlobusJurSection()
        {
            Paragraph globusJurInfo = new Paragraph();
            globusJurInfo.Leading = 10;
            globusJurInfo.Add(new Phrase("OOO", _tahomaBold));
            globusJurInfo.Add(Chunk.NEWLINE);
            globusJurInfo.Add(new Phrase(_handler.GlobusJurAddress, _tahomaBold));
            _actDoc.Add(globusJurInfo);
        }

        private void AddKreDebNumbers()
        {
            Paragraph kredDebInfo = new Paragraph();
            kredDebInfo.Leading = 10;
            kredDebInfo.Add(new Phrase("Заказчик: " + _handler.DocData.Bills.Select(bill => bill.SupplierName).FirstOrDefault(), _tahoma));
            kredDebInfo.Add(Chunk.NEWLINE);
            kredDebInfo.Add(new Phrase("Номер кредитора: " + _handler.DocData.SupplierNum, _tahoma));
            kredDebInfo.Add(Chunk.NEWLINE);
            kredDebInfo.Add(new Phrase("Номер дебитора: " + _handler.DocData.Bills.Select(bill => bill.DebitorNum).FirstOrDefault(), _tahoma));
            _actDoc.Add(kredDebInfo);
        }

        private void AddPositionsTable()
        {
            PdfPTable table = new PdfPTable(6);
            table.WidthPercentage = 100;
            table.SpacingBefore = 10;
            table.SpacingAfter = 10;
            float[] colWidths = new[] { 0.3f, 2.1f, 0.5f, 0.5f, 1.0f, 1.0f };
            table.SetWidths(colWidths);

            table.AddCell(VariousCells.GetCell("№", _tahomaBold));
            table.AddCell(VariousCells.GetCell("Наименование работы (услуги)", _tahomaBold));
            table.AddCell(VariousCells.GetCell("Ед. изм.", _tahomaBold));
            table.AddCell(VariousCells.GetCell("Количество", _tahomaBold));
            table.AddCell(VariousCells.GetCell("Цена", _tahomaBold));
            table.AddCell(VariousCells.GetCell("Сумма", _tahomaBold));

            int rowCounter = 1;

            foreach (Bonus bill in _handler.BonusList)
            {
                table.AddCell(VariousCells.GetCell(rowCounter++.ToString(CultureInfo.InvariantCulture), _tahoma));
                table.AddCell(VariousCells.GetCell(bill.Description, _tahoma));
                table.AddCell(VariousCells.GetCell("усл.", _tahoma));
                table.AddCell(VariousCells.GetCell(bill.Quantity, "{0:#,##0.00}", _tahoma));
                table.AddCell(VariousCells.GetCell(bill.Price, "{0:#,##0.00}", _tahoma));
                table.AddCell(VariousCells.GetCell(bill.Sum, "{0:#,##0.00}", _tahomaBold));
            }

            PdfPCell sumLabelCell = VariousCells.GetCell("Итого:", Element.ALIGN_RIGHT, Element.ALIGN_MIDDLE, 5, 1, _tahomaBold);
            sumLabelCell.Border = Rectangle.NO_BORDER;
            table.AddCell(sumLabelCell);

            PdfPCell sumCell = VariousCells.GetCell(_handler.Sum, "{0:#,##0.00}", _tahomaBold);
            table.AddCell(sumCell);

            PdfPCell taxLabelCell = VariousCells.GetCell("Итого НДС:", Element.ALIGN_RIGHT, Element.ALIGN_MIDDLE, 5, 1, _tahomaBold);
            taxLabelCell.Border = Rectangle.NO_BORDER;
            table.AddCell(taxLabelCell);

            PdfPCell taxCell = VariousCells.GetCell(_handler.Tax, "{0:#,##0.00}", _tahomaBold);
            table.AddCell(taxCell);

            PdfPCell overallSumLabelCell = VariousCells.GetCell("Всего (с учетом НДС):", Element.ALIGN_RIGHT, Element.ALIGN_MIDDLE, 5, 1, _tahomaBold);
            overallSumLabelCell.Border = Rectangle.NO_BORDER;
            table.AddCell(overallSumLabelCell);

            PdfPCell overallSumCell = VariousCells.GetCell(_handler.OverallSum, "{0:#,##0.00}", _tahomaBold);
            table.AddCell(overallSumCell);

            _overallSumRow = table.GetRow(table.Size - 1);

            _actDoc.Add(table);
        }

        private void AddInvoiceEmptyTableHeader()
        {
            PdfPTable table = new PdfPTable(6);
            table.WidthPercentage = 100;
            table.SpacingBefore = 10;
            table.SpacingAfter = 10;
            float[] colWidths = new[] { 0.3f, 2.1f, 0.5f, 0.5f, 1.0f, 1.0f };
            table.SetWidths(colWidths);

            table.AddCell(VariousCells.GetCell("№", _tahomaBold));
            table.AddCell(VariousCells.GetCell("Наименование работы (услуги)", _tahomaBold));
            table.AddCell(VariousCells.GetCell("Ед. изм.", _tahomaBold));
            table.AddCell(VariousCells.GetCell("Количество", _tahomaBold));
            table.AddCell(VariousCells.GetCell("Цена", _tahomaBold));
            table.AddCell(VariousCells.GetCell("Сумма", _tahomaBold));

            table.Rows.Add(_overallSumRow);

            _actDoc.Add(table);
        }

        private void AddSumAndAgreement()
        {
            Paragraph sumAndAgreement = new Paragraph();
            sumAndAgreement.Leading = 10;
            sumAndAgreement.Add(new Phrase("Всего оказано услуг на сумму: " + _handler.MakeStringSum(_handler.OverallSum) + " ,", _tahomaBold));
            sumAndAgreement.Add(Chunk.NEWLINE);
            sumAndAgreement.Add(new Phrase("в т.ч.: НДС - " + _handler.MakeStringSum(_handler.Tax), _tahomaBold));
            sumAndAgreement.Add(Chunk.NEWLINE);
            sumAndAgreement.Add(new Phrase("Вышеперечисленные услуги выполнены полностью и в срок.", _tahomaBold));
            sumAndAgreement.Add(Chunk.NEWLINE);
            sumAndAgreement.Add(new Phrase("Заказчик претензий по объему, качеству и срокам оказания услуг не имеет.", _tahomaBold));
            _actDoc.Add(sumAndAgreement);
        }

        private void AddInvoiceSignatures()
        {
            PdfPTable table = new PdfPTable(3);
            table.SpacingBefore = 20;
            table.WidthPercentage = 100;
            float[] colWidths = new[] { 1.0f, 0.2f, 1.0f };
            table.SetWidths(colWidths);

            PdfPCell emptyCell = VariousCells.GetEmptyCell(_tahoma);
            emptyCell.Border = Rectangle.NO_BORDER;

            PdfPCell cell = VariousCells.GetCell("Исполнитель:", Element.ALIGN_LEFT, Element.ALIGN_MIDDLE, _tahoma);
            cell.Border = Rectangle.NO_BORDER;
            table.AddCell(cell);
            table.AddCell(emptyCell);
            cell = VariousCells.GetCell("Заказчик:", Element.ALIGN_LEFT, Element.ALIGN_MIDDLE, _tahoma);
            cell.Border = Rectangle.NO_BORDER;
            table.AddCell(cell);
            cell = VariousCells.GetCell("".PadLeft(50) + "подпись", Element.ALIGN_CENTER, Element.ALIGN_MIDDLE, _tahomaSmall);
            cell.Border = Rectangle.NO_BORDER;
            table.AddCell(cell);
            table.AddCell(emptyCell);
            cell = VariousCells.GetCell("".PadLeft(50) + "подпись", Element.ALIGN_CENTER, Element.ALIGN_MIDDLE, _tahomaSmall);
            cell.Border = Rectangle.NO_BORDER;
            table.AddCell(cell);
            cell = VariousCells.GetCell("М.П.", Element.ALIGN_CENTER, Element.ALIGN_MIDDLE, _tahoma);
            cell.Border = Rectangle.NO_BORDER;
            table.AddCell(cell);
            table.AddCell(emptyCell);
            cell = VariousCells.GetCell("М.П.", Element.ALIGN_CENTER, Element.ALIGN_MIDDLE, _tahoma);
            cell.Border = Rectangle.NO_BORDER;
            table.AddCell(cell);

            _actDoc.Add(table);
        }

        private void AddGlobusBankDetails()
        {
            Paragraph bankDetails = new Paragraph();
            bankDetails.Leading = 10;
            bankDetails.Add(new Phrase("Наши реквизиты:", _tahomaSmall));
            bankDetails.Add(Chunk.NEWLINE);
            bankDetails.Add(new Phrase("ИНН " + _handler.Inn + ", КПП " + _handler.Kpp, _tahomaSmall));
            bankDetails.Add(Chunk.NEWLINE);
            bankDetails.Add(new Phrase("р/с ", _tahomaSmall));
            bankDetails.Add(Chunk.NEWLINE);
            bankDetails.Add(new Phrase("к/с  ", _tahomaSmall));
            _actDoc.Add(bankDetails);
        }
    }

    public class HeaderFooter : PdfPageEventHelper
    {
        string _header;

        public void SetHeader(String header)
        {
            _header = header;
        }

        public override void OnStartPage(PdfWriter writer, iTextSharp.text.Document document)
        {
            BaseFont baseCourBold = BaseFont.CreateFont("c:/windows/fonts/tahoma.ttf", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
            Font courierBold = new Font(baseCourBold, 8, Font.BOLD);

            PdfPTable headerTable = new PdfPTable(2);
            headerTable.WidthPercentage = 65;
            headerTable.DefaultCell.Border = 0;
            headerTable.DefaultCell.HorizontalAlignment = Element.ALIGN_CENTER;
            float[] headerTableWidths = { 1.0f, 0.4f };
            headerTable.SetWidths(headerTableWidths);

            Paragraph fullPar = new Paragraph();
            fullPar.Alignment = Element.ALIGN_CENTER;

            if (document.PageNumber == 1)
            {
                //
            }
            else
            {
                fullPar.Add(new Phrase(_header, courierBold));
                headerTable.AddCell(fullPar);
                headerTable.AddCell(new Phrase("        стр. " + writer.PageNumber, courierBold));
            }

            document.Add(headerTable);
            document.Add(Chunk.NEWLINE);

            base.OnStartPage(writer, document);
        }
    }
}