PdfShading shading = PdfShading.SimpleAxial(pdfWriter, x0, y0, x1, y1, BaseColor.YELLOW, BaseColor.RED);
PdfShadingPattern pattern = new PdfShadingPattern(shading);
ShadingColor color = new ShadingColor(pattern);

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

namespace iTextSharpGradientTest
{
    public class GradientCellEvent : IPdfPCellEvent
    {
        public void CellLayout(PdfPCell cell, Rectangle position, PdfContentByte[] canvases)
        {
            var cb = canvases[PdfPTable.BACKGROUNDCANVAS];
            cb.SaveState();

            var shading = PdfShading.SimpleAxial(
                                    cb.PdfWriter,
                                    position.Left, position.Top, position.Left, position.Bottom,
                                    BaseColor.YELLOW, BaseColor.ORANGE);
            var shadingPattern = new PdfShadingPattern(shading);

            cb.SetShadingFill(shadingPattern);
            cb.Rectangle(position.Left, position.Bottom, position.Width, position.Height);
            cb.Fill();

            cb.RestoreState();
        }
    }

    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();

                var table1 = new PdfPTable(1);
                table1.HeaderRows = 2;
                table1.FooterRows = 1;

                //header row  
                var headerCell = new PdfPCell(new Phrase("header"))
                {
                    HorizontalAlignment = Element.ALIGN_CENTER,
                    Border = 0
                };
                headerCell.CellEvent = new GradientCellEvent();
                table1.AddCell(headerCell);

                //footer row  
                var footerCell = new PdfPCell(new Phrase("footer"))
                {
                    HorizontalAlignment = Element.ALIGN_CENTER,
                    Border = 0
                };
                footerCell.CellEvent = new GradientCellEvent();
                table1.AddCell(footerCell);

                //adding some rows  
                for (int i = 0; i < 70; i++)
                {
                    var rowCell = new PdfPCell(new Phrase("Row " + i)) { BorderColor = BaseColor.LIGHT_GRAY };
                    table1.AddCell(rowCell);
                }

                pdfDoc.Add(table1);
            }

            //open the final file with adobe reader for instance.  
            Process.Start("Test.pdf");
        }
    }
}

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

namespace RowsCountSample
{
    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();

                var table1 = new PdfPTable(3);
                table1.HeaderRows = 2;
                table1.FooterRows = 1;

                //header row  
                var headerCell = new PdfPCell(new Phrase("header"));
                headerCell.Colspan = 3;
                headerCell.HorizontalAlignment = Element.ALIGN_CENTER;
                table1.AddCell(headerCell);

                //footer row  
                var footerCell = new PdfPCell(new Phrase("footer"));
                footerCell.Colspan = 3;
                footerCell.HorizontalAlignment = Element.ALIGN_CENTER;
                table1.AddCell(footerCell);

                //adding some rows  
                for (int i = 0; i < 70; i++)
                {
                    //adds a new row
                    table1.AddCell(new Phrase("Cell[0], Row[" + i + "]"));
                    table1.AddCell(new Phrase("Cell[1], Row[" + i + "]"));
                    table1.AddCell(new Phrase("Cell[2], Row[" + i + "]"));

                    //sets the number of rows per page
                    if (i > 0 && table1.Rows.Count % 7 == 0)
                    {
                        pdfDoc.Add(table1);
                        table1.DeleteBodyRows();
                        pdfDoc.NewPage();
                    }
                }

                pdfDoc.Add(table1);
            }

            //open the final file with adobe reader for instance.  
            Process.Start("Test.pdf");
        }
    }
}

if (i > 0 && table1.Rows.Count % 7 == 0)
{
      pdfDoc.Add(table1);
      table1.DeleteBodyRows();
      pdfDoc.NewPage();
}

using System;

using System.IO;

using iTextSharp.text;

using iTextSharp.text.pdf;

using System.Diagnostics;



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();



                var table1 = new PdfPTable(1);

                table1.WidthPercentage = 100f;

                table1.HeaderRows = 2;

                table1.FooterRows = 1;



                //header row

                var headerCell = new PdfPCell(new Phrase("header"));

                table1.AddCell(headerCell);



                //footer row

                var footerCell = new PdfPCell(new Phrase(" "));

                table1.AddCell(footerCell);



                //adding some rows

                for (int i = 0; i < 400; i++)

                {

                    var rowCell = new PdfPCell(new Phrase(i.ToString()));

                    table1.AddCell(rowCell);

                }



                // wrapping table1 in multiple columns

                ColumnText ct = new ColumnText(pdfWriter.DirectContent);

                ct.RunDirection = PdfWriter.RUN_DIRECTION_RTL;

                ct.AddElement(table1);



                int status = 0;

                int count = 0;

                int l = 0;

                int columnsWidth = 100;

                int columnsMargin = 7;

                int columnsPerPage = 4;

                int r = columnsWidth;

                bool isRtl = true;



                // render the column as long as it has content

                while (ColumnText.HasMoreText(status))

                {

                    if (isRtl)

                    {

                        ct.SetSimpleColumn(

                            pdfDoc.Right - l, pdfDoc.Bottom,

                            pdfDoc.Right - r, pdfDoc.Top

                        );

                    }

                    else

                    {

                        ct.SetSimpleColumn(

                            pdfDoc.Left + l, pdfDoc.Bottom,

                            pdfDoc.Left + r, pdfDoc.Top

                        );

                    }



                    var delta = columnsWidth + columnsMargin;

                    l += delta;

                    r += delta;



                    // render as much content as possible

                    status = ct.Go();



                    // go to a new page if you've reached the last column

                    if (++count > columnsPerPage)

                    {

                        count = 0;

                        l = 0;

                        r = columnsWidth;

                        pdfDoc.NewPage();

                    }

                }

            }



            //open the final file with adobe reader for instance.

            Process.Start("Test.pdf");

        }

}

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

namespace HeadersAndFooters
{
  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();

              var table1 = new PdfPTable(1);
              table1.HeaderRows = 2;
              table1.FooterRows = 1;

              //header row
              table1.AddCell(new Phrase("header"));

              //footer row
              table1.AddCell(new Phrase("footer"));

              //adding some rows
              for (int i = 0; i < 70; i++)
              {
                  table1.AddCell(new Phrase("Row " + i));
              }

              pdfDoc.Add(table1);
          }

          //open the final file with adobe reader for instance.
          Process.Start("Test.pdf");
      }
  }
}

table1.HeaderRows = 3;
table1.FooterRows = 1;

using System.Diagnostics;

using System.IO;

using iTextSharp.text;

using iTextSharp.text.html.simpleparser;

using iTextSharp.text.pdf;



namespace HeadersAndFooters

{

    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();



                var html = @"<span style='color:blue'><b>Testing</b></span>

                             <i>iTextSharp's</i> <u>HTML to PDF capabilities</u>";

                var parsedHtmlElements = HTMLWorker.ParseToList(new StringReader(html), null);



                foreach (var htmlElement in parsedHtmlElements)

                {

                    pdfDoc.Add(htmlElement);

                }

            }



            //open the final file with adobe reader for instance.

            Process.Start("Test.pdf");

        }

    }

}

using System.Diagnostics;

using System.IO;

using iTextSharp.text;

using iTextSharp.text.html.simpleparser;

using iTextSharp.text.pdf;

using iTextSharp.text.html;



namespace HeadersAndFooters

{

    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();                



                //روش صحیح تعریف فونت

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



                StyleSheet styles = new StyleSheet();

                styles.LoadTagStyle(HtmlTags.BODY, HtmlTags.FONTFAMILY, "tahoma");

                styles.LoadTagStyle(HtmlTags.BODY, HtmlTags.ENCODING, "Identity-H");                



                var html = @"<span style='color:blue'><b>آزمایش</b></span>

                                کتابخانه <i>iTextSharp</i> <u>جهت بررسی فارسی نویسی</u>";

                var parsedHtmlElements = HTMLWorker.ParseToList(new StringReader(html), styles);



                PdfPCell pdfCell = new PdfPCell { Border = 0 };

                pdfCell.RunDirection = PdfWriter.RUN_DIRECTION_RTL;



                foreach (var htmlElement in parsedHtmlElements)

                {

                    pdfCell.AddElement(htmlElement);

                }



                var table1 = new PdfPTable(1);

                table1.AddCell(pdfCell);

                pdfDoc.Add(table1);

            }



            //open the final file with adobe reader for instance.

            Process.Start("Test.pdf");

        }

    }

}

foreach (var htmlElement in parsedHtmlElements)

                {

                    if (htmlElement is PdfPTable)

                    {

                        var table = (PdfPTable)htmlElement;

                        table.RunDirection = PdfWriter.RUN_DIRECTION_RTL;

                        foreach (var row in table.Rows)

                        {

                            foreach (var cell in row.GetCells())

                            {

                                cell.RunDirection = PdfWriter.RUN_DIRECTION_RTL;                               

                            }

                        }

                    }



                    pdfCell.AddElement(htmlElement);

                }

Install-Package iTextSharp

            //  درج لوگوی مسابقات به صورت شفاف در پس زمینه
            var canvas = pdfWriter.DirectContentUnder;
            var logoImg = Image.GetInstance(competitionImagePath);
            logoImg.SetAbsolutePosition(0, 0);
            logoImg.ScaleAbsolute(pageSize);
            var graphicsState = new PdfGState { FillOpacity = 0.2F };
            canvas.SetGState(graphicsState);
            canvas.AddImage(logoImg);

چیدمان و طرح بندی بندی عناصر در iTextSharp

برای طراحی کارت یا کلا کار طراحی، باید با نحوه‌ی قرار دادن و طرح بندی عناصر مثل تصاویر و نوشته‌ها و ابزارهای مورد نیاز برای این کار، آشنا شوید. خوشبختانه در iText برای این کار ابزارهای خوبی وجود دارد.

حتما با تگ Table در HTML آشنایی دارید. در سال‌های دور، حتی کل صفحه‌ی وب را به وسیله‌ی Table ساختار دهی می‌کردند. در iTextSharp نیز کلاسی به نام PdfPTable در دسترس است که می‌توان از آن به عنوان قالبی برای قرار دادن عناصر، در صفحه استفاده کرد. این Table همانند هر جدولی دارای یک سری سطر و ستون است که می‌توانیم عناصر مورد نظرمان مثل تصویر و نوشته و... را در آن قرار دهیم. 

U+202A:   LEFT-TO-RIGHT EMBEDDING (LRE) 
U+202B:   RIGHT-TO-LEFT EMBEDDING (RLE) 
U+202D:   LEFT-TO-RIGHT OVERRIDE (LRO) 
U+202E:   RIGHT-TO-LEFT OVERRIDE (RLO) 
U+202C:   POP DIRECTIONAL FORMATTING (PDF) 

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

namespace RleTests
{
    class Program
    {
        const char RightToLeftEmbedding = (char)0x202B;
        const char PopDirectionalFormatting = (char)0x202C;

        static string FixWeakCharacters(string data)
        {
            if (string.IsNullOrWhiteSpace(data)) return string.Empty;
            var weakCharacters = new[] { @"\", "/", "+", "-", "=", ";", "$" };
            foreach (var weakCharacter in weakCharacters)
            {
                data = data.Replace(weakCharacter, RightToLeftEmbedding + weakCharacter + PopDirectionalFormatting);
            }
            return data;
        }

        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\\Arial.ttf");
                Font tahoma = FontFactory.GetFont("Arial", BaseFont.IDENTITY_H);

                var table1 = new PdfPTable(1);
                table1.WidthPercentage = 100;

                var pdfCell = new PdfPCell
                {
                    RunDirection = PdfWriter.RUN_DIRECTION_RTL,
                    Border = 0,
                    Phrase = new Phrase(FixWeakCharacters(
                        "تاریخ: " + "1390/11/18" + Environment.NewLine +
                        "شماره پروژه: " + "1/2/3/4/56" + Environment.NewLine +
                        "اسلش: " + " 12/A/13 " + Environment.NewLine +
                        "بک اسلش: " + "  12\\13\\14 " + Environment.NewLine +
                        "مساوی و جمع: " + " 2+3=5 " + Environment.NewLine +
                        "سمی کولون: " + " 2=1+1; " + Environment.NewLine +
                        "دلار: " + "12$" + Environment.NewLine +
                        "کاما: " + "12,34,67" + Environment.NewLine +
                        "نقطه: " + "12.34" + Environment.NewLine +
                        "پرانتز: " + "متن (ساده)"
                        ),
                        tahoma)
                };

                table1.AddCell(pdfCell);
                pdfDoc.Add(table1);

            }

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

<span dir="ltr" style="display:inline">1390/11/19</span>

U+202A:   LEFT-TO-RIGHT EMBEDDING (LRE) 
U+202B:   RIGHT-TO-LEFT EMBEDDING (RLE) 
U+202D:   LEFT-TO-RIGHT OVERRIDE (LRO) 
U+202E:   RIGHT-TO-LEFT OVERRIDE (RLO) 
U+202C:   POP DIRECTIONAL FORMATTING (PDF) 

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

namespace RleTests
{
    class Program
    {
        const char RightToLeftEmbedding = (char)0x202B;
        const char PopDirectionalFormatting = (char)0x202C;

        static string FixWeakCharacters(string data)
        {
            if (string.IsNullOrWhiteSpace(data)) return string.Empty;
            var weakCharacters = new[] { @"\", "/", "+", "-", "=", ";", "$" };
            foreach (var weakCharacter in weakCharacters)
            {
                data = data.Replace(weakCharacter, RightToLeftEmbedding + weakCharacter + PopDirectionalFormatting);
            }
            return data;
        }

        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\\Arial.ttf");
                Font tahoma = FontFactory.GetFont("Arial", BaseFont.IDENTITY_H);

                var table1 = new PdfPTable(1);
                table1.WidthPercentage = 100;

                var pdfCell = new PdfPCell
                {
                    RunDirection = PdfWriter.RUN_DIRECTION_RTL,
                    Border = 0,
                    Phrase = new Phrase(FixWeakCharacters(
                        "تاریخ: " + "1390/11/18" + Environment.NewLine +
                        "شماره پروژه: " + "1/2/3/4/56" + Environment.NewLine +
                        "اسلش: " + " 12/A/13 " + Environment.NewLine +
                        "بک اسلش: " + "  12\\13\\14 " + Environment.NewLine +
                        "مساوی و جمع: " + " 2+3=5 " + Environment.NewLine +
                        "سمی کولون: " + " 2=1+1; " + Environment.NewLine +
                        "دلار: " + "12$" + Environment.NewLine +
                        "کاما: " + "12,34,67" + Environment.NewLine +
                        "نقطه: " + "12.34" + Environment.NewLine +
                        "پرانتز: " + "متن (ساده)"
                        ),
                        tahoma)
                };

                table1.AddCell(pdfCell);
                pdfDoc.Add(table1);

            }

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

<span dir="ltr" style="display:inline">1390/11/19</span>