Simple way to create pdf document using itextsharp in C# and Asp.net

Step 1: First of all we have to download the iTextSharp pdf library.
Step2 : After downloading file add the reference of iTextSharp.dll to your project by right clicking on solution explorer.

Step 3 : Now add the Namespace to your .cs or .vb file

using iTextSharp.text;
using iTextSharp.text.pdf;

Step 4 : Now one whatever click you want to generate the file you can write the below code. in this example i am generating the pdf file on button click event.
Now we will create document

 private void btnPrint_Click(object sender, EventArgs e)
        {
  try
            {
                if (txtfromdate.Text != "" && txtTodate.Text != "")
                {
                    string dat = (DateTime.Now.Year + "-" + DateTime.Now.Month + "-" + DateTime.Now.Day);
                    Document document1 = new Document(PageSize.A4);
                    PdfWriter.GetInstance(document1, new FileStream("D:\\Sankou\\Reports\\Stock\\" + dat + "-StockReport.pdf", FileMode.Create));
                    document1.Open();
                    Paragraph para1 = new Paragraph();
                    para1.Alignment = Element.ALIGN_CENTER;
                    iTextSharp.text.Font _font24normal = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, 10, iTextSharp.text.Font.BOLD, BaseColor.BLACK);
                    iTextSharp.text.Font _font24 = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.TIMES_ROMAN, 11, iTextSharp.text.Font.NORMAL, BaseColor.BLACK);
                    iTextSharp.text.Font _fontsize24 = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.TIMES_ROMAN, 16, iTextSharp.text.Font.BOLD, BaseColor.BLACK);
                    iTextSharp.text.Font _fontunder = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.TIMES_ROMAN, 16, iTextSharp.text.Font.BOLD, BaseColor.BLACK);
                    iTextSharp.text.Font _fontitalic = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.TIMES_ROMAN, 10, iTextSharp.text.Font.BOLDITALIC, BaseColor.BLACK);
                    Paragraph paragraph2 = new Paragraph();
                    paragraph2.Alignment = Element.ALIGN_RIGHT;
                    paragraph2.Add("Date" + DateTime.Now.ToShortDateString() + "\n\n");
                    document1.Add(paragraph2);
                    Phrase ps = new Phrase("S.K Enterprise" + "\n", _fontunder);
                    Phrase ps1 = new Phrase("Stock Report" + "\n", _fontunder);
                    Phrase p1 = new Phrase("TS.NO.9832,SIVAPURAM" + "\n");//, _fontunder);
                    Phrase p4 = new Phrase("2ND STREET,CHENNAI" + "\n");//, _fontunder);
                    Phrase p2 = new Phrase("04322-34343232,237657941" + "\n");//, _fontunder);
                    Phrase p5 = new Phrase("TIN-3353423406" + "\n");//, _fontunder);
                    Phrase p6 = new Phrase("E-Mail:skpdkt@gmail.com" + "\n");//, _fontunder);

                    para1.Add(ps);
                    para1.Add(ps1);
                    para1.Add(p1);
                    para1.Add(p4);
                    para1.Add(p2);
                    para1.Add(p5);
                    para1.Add(p6);
                    document1.Add(para1);

                    Paragraph paragraph4 = new Paragraph();
                    paragraph4.Alignment = Element.ALIGN_CENTER;
                    paragraph4.Font.IsBold();
                    paragraph4.Add("Report on (" + txtfromdate.Text + ")-(" + txtTodate.Text + ")\n\n");
                    document1.Add(paragraph4);

                    //PdfPTable table1 = new PdfPTable(4);
                    //table1.WidthPercentage = 80;
                    var table1 = new PdfPTable(4) { WidthPercentage = 100}; var colWidthPercentages = new[] { 60f, 10f, 20f, 20f }; table1.SetWidths(colWidthPercentages);
                    table1.AddCell(dataGridView1.Columns[0].HeaderText);
                    table1.AddCell(dataGridView1.Columns[1].HeaderText);
                    table1.AddCell(dataGridView1.Columns[2].HeaderText);
                    table1.AddCell(dataGridView1.Columns[3].HeaderText);

                    for (int x1 = 0; x1 < dataGridView1.Rows.Count - 1; x1++)
                    {
                        table1.AddCell(dataGridView1.Rows[x1].Cells[0].Value.ToString());
                        table1.AddCell(dataGridView1.Rows[x1].Cells[1].Value.ToString());
                        table1.AddCell(Convert.ToDecimal(dataGridView1.Rows[x1].Cells[2].Value.ToString()).ToString("N", CInfo));
                        table1.AddCell(Convert.ToDecimal(dataGridView1.Rows[x1].Cells[3].Value.ToString()).ToString("N", CInfo));
                   }
                    document1.Add(table1);
                    Paragraph paragraph5 = new Paragraph();
                    paragraph5.Alignment = Element.ALIGN_CENTER;
                    paragraph5.Font.IsBold();
                    paragraph5.Add("\n");
                    paragraph5.Add("\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tTotal Amount: " + label5.Text + "\n");
                    document1.Add(paragraph5);
                    document1.Close();
                    System.Diagnostics.Process.Start("D:\\Sankou\\Reports\\Stock\\" + dat + "-StockReport.pdf");
                }
                else
                {
                    string dat = (DateTime.Now.Year + "-" + DateTime.Now.Month + "-" + DateTime.Now.Day);
                    Document document1 = new Document(PageSize.A4);
                    PdfWriter.GetInstance(document1, new FileStream("D:\\Sankou\\Reports\\Stock\\" + dat + "-StockReport.pdf", FileMode.Create));
                    document1.Open();
                    Paragraph para1 = new Paragraph();
                    para1.Alignment = Element.ALIGN_CENTER;
                    iTextSharp.text.Font _font24normal = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, 10, iTextSharp.text.Font.BOLD, BaseColor.BLACK);
                    iTextSharp.text.Font _font24 = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.TIMES_ROMAN, 11, iTextSharp.text.Font.NORMAL, BaseColor.BLACK);
                    iTextSharp.text.Font _fontsize24 = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.TIMES_ROMAN, 16, iTextSharp.text.Font.BOLD, BaseColor.BLACK);
                    iTextSharp.text.Font _fontunder = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.TIMES_ROMAN, 16, iTextSharp.text.Font.BOLD, BaseColor.BLACK);
                    iTextSharp.text.Font _fontitalic = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.TIMES_ROMAN, 10, iTextSharp.text.Font.BOLDITALIC, BaseColor.BLACK);
                    Paragraph paragraph2 = new Paragraph();
                    paragraph2.Alignment = Element.ALIGN_RIGHT;
                    paragraph2.Add("Date" + DateTime.Now.ToShortDateString() + "\n\n");
                    document1.Add(paragraph2);
                    Phrase ps = new Phrase("S.K Enterprise" + "\n", _fontunder);
                    Phrase p1 = new Phrase("TS.NO.9932,MARTHANDAPURAM" + "\n");//, _fontunder);
                    Phrase p4 = new Phrase("2ND STREET,PUDUKKOTTAI" + "\n");//, _fontunder);
                    Phrase p2 = new Phrase("04322-233556,220556" + "\n");//, _fontunder);
                    Phrase p5 = new Phrase("TIN-33574105206" + "\n");//, _fontunder);
                    Phrase p6 = new Phrase("E-Mail:svsvijayatyrespdkt@gmail.com" + "\n");//, _fontunder);

                    para1.Add(ps);
                    para1.Add(p1);
                    para1.Add(p4);
                    para1.Add(p2);
                    para1.Add(p5);
                    para1.Add(p6);
                    document1.Add(para1);

                    Paragraph paragraph4 = new Paragraph();
                    paragraph4.Alignment = Element.ALIGN_CENTER;
                    paragraph4.Font.IsBold();
                    paragraph4.Add("Stock Report on " + dat + "\n\n");
                    document1.Add(paragraph4);

                    var table1 = new PdfPTable(4) { WidthPercentage = 100 }; var colWidthPercentages = new[] { 60f, 10f, 20f, 20f }; table1.SetWidths(colWidthPercentages);
                    table1.AddCell(dataGridView1.Columns[0].HeaderText);
                    table1.AddCell(dataGridView1.Columns[1].HeaderText);
                    table1.AddCell(dataGridView1.Columns[2].HeaderText);
                    table1.AddCell(dataGridView1.Columns[3].HeaderText);
                    for (int x1 = 0; x1 < dataGridView1.Rows.Count - 1; x1++)
                    {
                        table1.AddCell(dataGridView1.Rows[x1].Cells[0].Value.ToString());
                        table1.AddCell(dataGridView1.Rows[x1].Cells[1].Value.ToString());
                        table1.AddCell(Convert.ToDecimal(dataGridView1.Rows[x1].Cells[2].Value.ToString()).ToString("N", CInfo));
                        table1.AddCell(Convert.ToDecimal(dataGridView1.Rows[x1].Cells[3].Value.ToString()).ToString("N", CInfo));

                    }
                    document1.Add(table1);
                    Paragraph paragraph5 = new Paragraph();
                    paragraph5.Alignment = Element.ALIGN_CENTER;
                    paragraph5.Font.IsBold();
                    paragraph5.Add("\n");
                    paragraph5.Add("\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tTotal Amount Rs: " + label5.Text + "\n");
                    document1.Add(paragraph5);
                    document1.Close();
                    System.Diagnostics.Process.Start("D:Reports\\Stock\\" + dat + "-StockReport.pdf");
                }
            }
            catch (Exception)
            {
            }
            finally
            {
            }
Sample PDF As Follows: