namespace PdfReportSamples.Models
{
    public class Task
    {
        public int Id { set; get; }
        public string Name { set; get; }
        public int PercentCompleted { set; get; }
        public bool IsActive { set; get; }
        public User Assignee { set; get; }
    }
}

using System;

namespace PdfReportSamples.Models
{
    public class User
    {
        public int Id { set; get; }
        public string Name { set; get; }
        public string LastName { set; get; }
        public long Balance { set; get; }
        public DateTime RegisterDate { set; get; }
    }
}

 column.PropertyName<Task>(x => x.Assignee.Name) 

using System;
using System.Collections.Generic;
using System.Drawing;
using PdfReportSamples.Models;
using PdfRpt.Core.Contracts;
using PdfRpt.FluentInterface;

namespace PdfReportSamples.CustomHeaderFooter
{
    public class CustomHeaderFooterPdfReport
    {
        readonly CustomHeader _customHeader = new CustomHeader();
        public IPdfReportData CreatePdfReport()
        {
            return new PdfReport().DocumentPreferences(doc =>
            {
                doc.RunDirection(PdfRunDirection.LeftToRight);
                doc.Orientation(PageOrientation.Portrait);
                doc.PageSize(PdfPageSize.A4);
                doc.DocumentMetadata(new DocumentMetadata { Author = "Vahid", Application = "PdfRpt", Keywords = "Test", Subject = "Test Rpt", Title = "Test" });
            })
            .DefaultFonts(fonts =>
            {
                fonts.Path(Environment.GetEnvironmentVariable("SystemRoot") + "\\fonts\\tahoma.ttf",
                                  Environment.GetEnvironmentVariable("SystemRoot") + "\\fonts\\verdana.ttf");
            })
            .PagesFooter(footer =>
            {
                footer.CustomFooter(new CustomFooter(footer.PdfFont, PdfRunDirection.LeftToRight));
            })
            .PagesHeader(header =>
            {
                header.CustomHeader(_customHeader);
            })
            .MainTableTemplate(template =>
            {
                template.BasicTemplate(BasicTemplate.SilverTemplate);
            })
            .MainTablePreferences(table =>
            {
                table.ColumnsWidthsType(TableColumnWidthType.Relative);
                table.MultipleColumnsPerPage(new MultipleColumnsPerPage
                {
                    ColumnsGap = 22,
                    ColumnsPerPage = 2,
                    ColumnsWidth = 250,
                    IsRightToLeft = false,
                    TopMargin = 7
                });
            })
            .MainTableDataSource(dataSource =>
            {
                var rows = new List<Task>();
                var rnd = new Random();
                for (int i = 1; i < 210; i++)
                {
                    rows.Add(new Task
                    {
                        Assignee = new User
                        {
                            Id = i,
                            Name = "user-" + i
                        },
                        IsActive = rnd.Next(0, 2) == 1 ? true : false,
                        Name = "task-" + i
                    });
                }
                dataSource.StronglyTypedList(rows);
            })
            .MainTableColumns(columns =>
            {
                columns.AddColumn(column =>
                {
                    column.PropertyName("rowNo");
                    column.IsRowNumber(true);
                    column.CellsHorizontalAlignment(HorizontalAlignment.Center);
                    column.IsVisible(true);
                    column.Order(0);
                    column.Width(1);
                    column.HeaderCell("#");
                });

                columns.AddColumn(column =>
                {
                    column.PropertyName<Task>(x => x.Name);
                    column.CellsHorizontalAlignment(HorizontalAlignment.Center);
                    column.IsVisible(true);
                    column.Order(1);
                    column.Width(3);
                    column.HeaderCell("Task Name");
                });

                columns.AddColumn(column =>
                {
                    column.PropertyName<Task>(x => x.Assignee.Name); // nested property support
                    column.CellsHorizontalAlignment(HorizontalAlignment.Center);
                    column.IsVisible(true);
                    column.Order(2);
                    column.Width(3);
                    column.HeaderCell("Assignee");
                });

                columns.AddColumn(column =>
                {
                    column.PropertyName<Task>(x => x.IsActive);
                    column.CellsHorizontalAlignment(HorizontalAlignment.Center);
                    column.IsVisible(true);
                    column.Order(3);
                    column.Width(2);
                    column.HeaderCell("Active");
                    column.ColumnItemsTemplate(template =>
                    {
                        template.Checkmark(checkmarkFillColor: Color.Green, crossSignFillColor: Color.DarkRed);
                    });
                });
            })
            .MainTableEvents(events =>
            {
                events.DataSourceIsEmpty(message: "There is no data available to display.");
            })
            .Export(export =>
            {
                export.ToExcel();
            })
            .Generate(data => data.AsPdfFile(AppPath.ApplicationPath + "\\Pdf\\CustomHeaderFooterPdfReportSample.pdf"));
        }
    }
}

using System.Collections.Generic;
using iTextSharp.text;
using iTextSharp.text.pdf;
using PdfRpt.Core.Contracts;
using PdfRpt.Core.Helper;

namespace PdfReportSamples.CustomHeaderFooter
{
    public class CustomHeader : IPageHeader
    {
        public PdfPTable RenderingGroupHeader(Document pdfDoc, PdfWriter pdfWriter, IList<CellData> rowdata, IList<SummaryCellData> summaryData)
        {
            return null;
        }

        Image _image;
        public PdfPTable RenderingReportHeader(Document pdfDoc, PdfWriter pdfWriter, IList<SummaryCellData> summaryData)
        {
            if (_image == null) //cache is empty
            {
                var templatePath = AppPath.ApplicationPath + "\\data\\PdfHeaderTemplate.pdf";
                _image = PdfImageHelper.GetITextSharpImageFromPdfTemplate(pdfWriter, templatePath);
            }

            var table = new PdfPTable(1);
            var cell = new PdfPCell(_image, true) { Border = 0 };
            table.AddCell(cell);
            return table;
        }
    }
}

using System.Collections.Generic;
using iTextSharp.text;
using iTextSharp.text.pdf;
using PdfRpt.Core.Contracts;

namespace PdfReportSamples.CustomHeaderFooter
{
    public class CustomFooter : IPageFooter
    {
        PdfContentByte _pdfContentByte;
        readonly IPdfFont _pdfRptFont;
        readonly Font _font;
        readonly PdfRunDirection _direction;
        PdfTemplate _template;

        public CustomFooter(IPdfFont pdfRptFont, PdfRunDirection direction)
        {
            _direction = direction;
            _pdfRptFont = pdfRptFont;
            _font = _pdfRptFont.Fonts[0];
        }

        public void ClosingDocument(PdfWriter writer, Document document, IList<SummaryCellData> columnCellsSummaryData)
        {
            _template.BeginText();
            _template.SetFontAndSize(_pdfRptFont.Fonts[0].BaseFont, 8);
            _template.SetTextMatrix(0, 0);
            _template.ShowText((writer.PageNumber - 1).ToString());
            _template.EndText();
        }

        public void PageFinished(PdfWriter writer, Document document, IList<SummaryCellData> columnCellsSummaryData)
        {
            var pageSize = document.PageSize;
            var text = "Page " + writer.PageNumber + " / ";
            var textLen = _font.BaseFont.GetWidthPoint(text, _font.Size);
            var center = (pageSize.Left + pageSize.Right) / 2;
            var align = _direction == PdfRunDirection.RightToLeft ? Element.ALIGN_RIGHT : Element.ALIGN_LEFT;

            ColumnText.ShowTextAligned(
                        canvas: _pdfContentByte,
                        alignment: align,
                        phrase: new Phrase(text, _font),
                        x: center,
                        y: pageSize.GetBottom(25),
                        rotation: 0,
                        runDirection: (int)_direction,
                        arabicOptions: 0);

            var x = _direction == PdfRunDirection.RightToLeft ? center - textLen : center + textLen;
            _pdfContentByte.AddTemplate(_template, x, pageSize.GetBottom(25));
        }

        public void DocumentOpened(PdfWriter writer, IList<SummaryCellData> columnCellsSummaryData)
        {
            _pdfContentByte = writer.DirectContent;
            _template = _pdfContentByte.CreateTemplate(50, 50);
        }
    }
}

using System.Collections.Generic;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace PdfRpt.Core.Contracts
{
    public interface IPageHeader
    {
        PdfPTable RenderingGroupHeader(Document pdfDoc, PdfWriter pdfWriter, IList<CellData> newGroupInfo, IList<SummaryCellData> summaryData);

        PdfPTable RenderingReportHeader(Document pdfDoc, PdfWriter pdfWriter, IList<SummaryCellData> summaryData);
    }
}

using iTextSharp.text;
using iTextSharp.text.pdf;
using System.Collections.Generic;

namespace PdfRpt.Core.Contracts
{
    public interface IPageFooter
    {
        void DocumentOpened(PdfWriter writer, IList<SummaryCellData> columnCellsSummaryData);

        void PageFinished(PdfWriter writer, Document document, IList<SummaryCellData> columnCellsSummaryData);

        void ClosingDocument(PdfWriter writer, Document document, IList<SummaryCellData> columnCellsSummaryData);
    }
}

readonly CustomHeader _customHeader = new CustomHeader();
//...
.PagesFooter(footer =>
{
   footer.CustomFooter(new CustomFooter(footer.PdfFont, PdfRunDirection.LeftToRight));
})
.PagesHeader(header =>
{
  header.CustomHeader(_customHeader);
})

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.html;
using iTextSharp.text.html.simpleparser;
using iTextSharp.text.pdf;

namespace CustomHtmlWorkerTag
{
    /// <summary>
    /// Our custom HTML Tag to add an IElement.
    /// </summary>
    public class CustomImageHTMLTagProcessor : IHTMLTagProcessor
    {
        /// <summary>
        /// Tells the HTMLWorker what to do when a close tag is encountered.
        /// </summary>
        public void EndElement(HTMLWorker worker, string tag)
        {
        }

        /// <summary>
        /// Tells the HTMLWorker what to do when an open tag is encountered.
        /// </summary>
        public void StartElement(HTMLWorker worker, string tag, IDictionary<string, string> attrs)
        {
            Image image;
            var src = attrs["src"];

            if (src.StartsWith("data:image/"))
            {
                // data:[<MIME-type>][;charset=<encoding>][;base64],<data>
                var base64Data = src.Substring(src.IndexOf(",") + 1);
                var imagedata = Convert.FromBase64String(base64Data);
                image = Image.GetInstance(imagedata);
            }
            else
            {
                image = Image.GetInstance(src);
            }

            worker.UpdateChain(tag, attrs);
            worker.ProcessImage(image, attrs);
            worker.UpdateChain(tag);
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            using (var pdfDoc = new Document(PageSize.A4))
            {
                PdfWriter.GetInstance(pdfDoc, new FileStream("Test.pdf", FileMode.Create));
                pdfDoc.Open();

                FontFactory.Register("c:\\windows\\fonts\\tahoma.ttf");

                var tags = new HTMLTagProcessors();
                // Replace the built-in image processor
                tags[HtmlTags.IMG] = new CustomImageHTMLTagProcessor();

                var html = "<img alt='' src='data:image/png;base64,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' />";

                var styles = new StyleSheet();
                styles.LoadTagStyle(HtmlTags.BODY, HtmlTags.FONTFAMILY, "tahoma");
                styles.LoadTagStyle(HtmlTags.BODY, HtmlTags.ENCODING, "Identity-H");

                PdfPCell pdfCell = new PdfPCell { Border = 0 };
                pdfCell.RunDirection = PdfWriter.RUN_DIRECTION_LTR;

                using (var reader = new StringReader(html))
                {
                    var parsedHtmlElements = HTMLWorker.ParseToList(reader, styles, tags, null);

                    foreach (var htmlElement in parsedHtmlElements)
                    {
                        pdfCell.AddElement(htmlElement);
                    }
                }

                var table1 = new PdfPTable(1);
                table1.AddCell(pdfCell);
                pdfDoc.Add(table1);
            }

            Process.Start("Test.pdf");
        }
    }
}

var tags = new HTMLTagProcessors();
// Replace the built-in image processor
tags[HtmlTags.IMG] = new CustomImageHTMLTagProcessor();

HTMLWorker.ParseToList(reader, styles, tags, null)

منتهی همانطور که مشاهده می‌کنید کماکان با تاریخ مشکل دارم. از تابع FixWeakCharacters نیز استفاده کرده ام ولی باز هم مشکل دارم، کد سلول سفارشی نیز این است : 

public PdfPCell RenderingCell(CellAttributes attributes)
        {
            var value = attributes.RowData.TableRowData.GetSafeStringValueOf(colName);
            var mainTable = new PdfGrid(1)
            {
                WidthPercentage = 100,
                RunDirection = PdfWriter.RUN_DIRECTION_RTL
            };
            string[] seperatedLine = value.Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
            foreach (var line in seperatedLine)
            {
                mainTable.AddSimpleRow((data, cellProperties) =>
                       {
                           cellProperties.BorderWidth = 1f;
                           cellProperties.BackgroundColor = attributes.BasicProperties.BackgroundColor;
                           data.Value = line.FixWeakCharacters();
                           cellProperties.RunDirection = PdfRunDirection.RightToLeft;
                           cellProperties.CellPadding = 2;
                           cellProperties.PdfFont = attributes.BasicProperties.PdfFont;
                           cellProperties.HorizontalAlignment = HorizontalAlignment.Left;
                       });
            }

            var cell = new PdfPCell
            {
                Border = 1,
                RunDirection = PdfWriter.RUN_DIRECTION_RTL,
                HorizontalAlignment = Element.ALIGN_RIGHT
            };
            cell.AddElement(mainTable);
            return cell;

        }

با تشکر

using System.Diagnostics;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace PDFAttachment
{
    class Program
    {
        static void Main(string[] args)
        {
            using (var pdfDoc = new Document(PageSize.A4))
            {
                var pdfWriter = PdfWriter.GetInstance(pdfDoc, new FileStream("Test.pdf", FileMode.Create));                
                pdfDoc.Open();

                pdfDoc.Add(new Phrase("Test"));

                var fs = PdfFileSpecification.FileEmbedded(pdfWriter, @"C:\path\logo.png", "logo.png", null);
                pdfWriter.AddFileAttachment("توضیحات",fs);
            }

            Process.Start("Test.pdf");
        }
    }
}

• قسمت modified مقدار دهی نشده است.
• پنل مربوط به پیوست‌ها باید دستی باز شود.

using System.Diagnostics;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace PDFAttachment
{
    class Program
    {
        static void Main(string[] args)
        {
            using (var pdfDoc = new Document(PageSize.A4))
            {
                var pdfWriter = PdfWriter.GetInstance(pdfDoc, new FileStream("Test.pdf", FileMode.Create));                
                pdfDoc.Open();

                pdfDoc.Add(new Phrase("Test"));

                var filePath = @"C:\path\logo.png";
                var fileInfo = new FileInfo(filePath);
                var pdfDictionary = new PdfDictionary();
                pdfDictionary.Put(PdfName.MODDATE, new PdfDate(fileInfo.LastWriteTime));
                var fs = PdfFileSpecification.FileEmbedded(pdfWriter, filePath, fileInfo.Name, null, true, null, pdfDictionary);
                pdfWriter.AddFileAttachment("توضیحات", fs);
            }

            Process.Start("Test.pdf");
        }
    }
}

pdfWriter.ViewerPreferences = PdfWriter.PageModeUseAttachments;

using System.Diagnostics;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace PDFAttachment
{
    class Program
    {
        static void Main(string[] args)
        {
            var reader = new PdfReader("Test.pdf");
            using (var stamper = new PdfStamper(reader, new FileStream("newTest.pdf", FileMode.Create)))
            {
                var filePath = @"C:\path\logo.png";
                addAttachment(stamper, filePath, "توضیحات");
                stamper.Close();
            }

            Process.Start("newTest.pdf");
        }

        private static void addAttachment(PdfStamper stamper, string filePath, string description)
        {
            var fileInfo = new FileInfo(filePath);
            var pdfDictionary = new PdfDictionary();
            pdfDictionary.Put(PdfName.MODDATE, new PdfDate(fileInfo.LastWriteTime));
            var pdfWriter = stamper.Writer;
            var fs = PdfFileSpecification.FileEmbedded(pdfWriter, filePath, fileInfo.Name, null, true, null, pdfDictionary);
            stamper.AddFileAttachment(description, fs);
        }
    }
}

• در متد تحریف شده‌ی OnOpenDocument ، یک قالب PDF ساده را تولید می‌کنیم (مثلا یک مستطیل کوچک خالی).
• سپس در متد OnEndPage ، این قالب را به انتهای تمام صفحات در حال تولید اضافه خواهیم کرد.
• زمانیکه متد OnCloseDocument فراخوانده شد، عدد تعداد کل صفحات را در این قالب که به تمام صفحات اضافه شده، درج خواهیم کرد. به این ترتیب این عدد به صورت خودکار در تمام صفحات نمایش داده خواهد شد.

using System;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace iTextSharpTests
{
   public class PdfWriterPageEvents : PdfPageEventHelper
   {
       PdfContentByte _pdfContentByte;
       // عدد نهایی تعداد کل صفحات را در این قالب قرار خواهیم داد
       PdfTemplate _template;
       BaseFont _baseFont;

       public override void OnOpenDocument(PdfWriter writer, Document document)
       {
           _baseFont = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
           _pdfContentByte = writer.DirectContent;
           _template = _pdfContentByte.CreateTemplate(50, 50);
       }

       public override void OnEndPage(PdfWriter writer, Document document)
       {
           base.OnEndPage(writer, document);
           String text = writer.PageNumber + "/";
           float len = _baseFont.GetWidthPoint(text, 8);
           Rectangle pageSize = document.PageSize;
           _pdfContentByte.SetRGBColorFill(100, 100, 100);
           _pdfContentByte.BeginText();
           _pdfContentByte.SetFontAndSize(_baseFont, 8);
           _pdfContentByte.SetTextMatrix(pageSize.GetLeft(40), pageSize.GetBottom(30));
           _pdfContentByte.ShowText(text);
           _pdfContentByte.EndText();
           //در پایان هر صفحه یک جای خالی را مخصوص تعداد کل صفحات رزرو خواهیم کرد
           _pdfContentByte.AddTemplate(_template, pageSize.GetLeft(40) + len, pageSize.GetBottom(30));
       }
       public override void OnCloseDocument(PdfWriter writer, Document document)
       {
           base.OnCloseDocument(writer, document);
           _template.BeginText();
           _template.SetFontAndSize(_baseFont, 8);
           _template.SetTextMatrix(0, 0);
           //درج تعداد کل صفحات در تمام قالب‌های اضافه شده
           _template.ShowText((writer.PageNumber - 1).ToString());
           _template.EndText();
       }
   }

   public class AddTotalNoPages
   {
       public static void CreateTestPdf()
       {
           using (var pdfDoc = new Document(PageSize.A4))
           {
               var pdfWriter = PdfWriter.GetInstance(pdfDoc, new FileStream("tpn.pdf", FileMode.Create));
               pdfWriter.PageEvent = new PdfWriterPageEvents();
               pdfDoc.Open();


               pdfDoc.Add(new Phrase("Page1"));
               pdfDoc.NewPage();
               pdfDoc.Add(new Phrase("Page2"));
               pdfDoc.NewPage();
               pdfDoc.Add(new Phrase("Page3"));
           }
       }
   }
}

using System;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;

namespace iTextSharpTests
{
    public class PdfWriterPageEvents : PdfPageEventHelper
    {
        PdfContentByte _pdfContentByte;
        // عدد نهایی تعداد کل صفحات را در این قالب قرار خواهیم داد
        PdfTemplate _template;
        Font _font;
        public override void OnOpenDocument(PdfWriter writer, Document document)
        {
            FontFactory.Register(Environment.GetEnvironmentVariable("SystemRoot") + "\\fonts\\tahoma.ttf");
            _font = FontFactory.GetFont("Tahoma", BaseFont.IDENTITY_H, embedded: true, size: 9);
            _pdfContentByte = writer.DirectContent;
            _template = _pdfContentByte.CreateTemplate(50, 50);
        }

        public override void OnEndPage(PdfWriter writer, Document document)
        {
            base.OnEndPage(writer, document);

            var pageSize = document.PageSize;
            var text = "صفحه " + writer.PageNumber + " از ";
            var textLen = _font.BaseFont.GetWidthPoint(text, _font.Size);
            var center = (pageSize.Left + pageSize.Right) / 2;

            ColumnText.ShowTextAligned(
                _pdfContentByte,
                Element.ALIGN_RIGHT,
                new Phrase(text, _font),
                center,
                pageSize.GetBottom(25),
                0,
                PdfWriter.RUN_DIRECTION_RTL,
                0);

            //در پایان هر صفحه یک جای خالی را مخصوص تعداد کل صفحات رزرو خواهیم کرد
            _pdfContentByte.AddTemplate(_template, center - textLen, pageSize.GetBottom(25));
        }
        public override void OnCloseDocument(PdfWriter writer, Document document)
        {
            base.OnCloseDocument(writer, document);
            _template.BeginText();
            _template.SetFontAndSize(_font.BaseFont, _font.Size);
            _template.SetTextMatrix(0, 0);
            //درج تعداد کل صفحات در تمام قالب‌های اضافه شده
            _template.ShowText((writer.PageNumber - 1).ToString());
            _template.EndText();
        }
    }

    public class AddTotalNoPages
    {
        public static void CreateTestPdf()
        {
            using (var pdfDoc = new Document(PageSize.A4))
            {
                var pdfWriter = PdfWriter.GetInstance(pdfDoc, new FileStream("tpn.pdf", FileMode.Create));
                pdfWriter.PageEvent = new PdfWriterPageEvents();
                pdfDoc.Open();


                pdfDoc.Add(new Phrase("Page1"));
                pdfDoc.NewPage();
                pdfDoc.Add(new Phrase("Page2"));
                pdfDoc.NewPage();
                pdfDoc.Add(new Phrase("Page3"));
            }

            System.Diagnostics.Process.Start("tpn.pdf");
        }
    }
}