Generating PDF from DataTable using iTextSharp

iTextSharp is a wonderful open-source tool for generating PDF in C#.

Here is a simple generic helper class for Exporting data from a DataTable to a PDF file.

using System;
using System.Web;
using System.Data;

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

namespace yetanothercoder
{
    /// 

    /// Summary description for CreatePdf
    /// 
    public class PDFExporter
    {

        private readonly DataTable dataTable;
        private readonly string fileName;
        private readonly bool timeStamp;

        public PDFExporter(DataTable dataTable, string fileName, bool timeStamp)
        {
            this.dataTable = dataTable;
            this.fileName = timeStamp ? String.Format("{0}-{1}", fileName, GetTimeStamp(DateTime.Now)) : fileName;
            this.timeStamp = timeStamp;
        }

        public void ExportPDF()
        {
            HttpResponse Response = HttpContext.Current.Response;
            Response.Clear();
            Response.ContentType = "application/octet-stream";
            Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName + ".pdf");

            // step 1: creation of a document-object
            Document document = new Document(PageSize.A4, 10, 10, 90, 10);

            // step 2: we create a writer that listens to the document
            PdfWriter writer = PdfWriter.GetInstance(document, Response.OutputStream);

            //set some header stuff
            document.AddTitle(fileName);
            document.AddSubject(String.Format("Table of {0}", fileName));
            document.AddCreator("www.yetanothercoder.com");
            document.AddAuthor("naveenj");

            // step 3: we open the document
            document.Open();

            // step 4: we add content to the document
            CreatePages(document);

            // step 5: we close the document
            document.Close();
        }

        private void CreatePages(Document document)
        {
            document.NewPage();
            document.Add(FormatPageHeaderPhrase(dataTable.TableName));
            PdfPTable pdfTable = new PdfPTable(dataTable.Columns.Count);
            pdfTable.DefaultCell.Padding = 3;
            pdfTable.WidthPercentage = 100; // percentage
            pdfTable.DefaultCell.BorderWidth = 2;
            pdfTable.DefaultCell.HorizontalAlignment = Element.ALIGN_CENTER;

            foreach (DataColumn column in dataTable.Columns)
            {
                pdfTable.AddCell(FormatHeaderPhrase(column.ColumnName));
            }
            pdfTable.HeaderRows = 1;  // this is the end of the table header
            pdfTable.DefaultCell.BorderWidth = 1;

            foreach (DataRow row in dataTable.Rows)
            {
                foreach (object cell in row.ItemArray)
                {
                    //assume toString produces valid output
                    pdfTable.AddCell(FormatPhrase(cell.ToString()));
                }
            }

            document.Add(pdfTable);
        }

        private static Phrase FormatPageHeaderPhrase(string value)
        {
            return new Phrase(value, FontFactory.GetFont(FontFactory.TIMES, 10, Font.BOLD, new BaseColor(255, 0, 0)));
        }

        private static Phrase FormatHeaderPhrase(string value)
        {
            return new Phrase(value, FontFactory.GetFont(FontFactory.TIMES, 8, Font.UNDERLINE, new BaseColor(0, 0, 255)));
        }

        private Phrase FormatPhrase(string value)
        {
            return new Phrase(value, FontFactory.GetFont(FontFactory.TIMES, 8));
        }

        private string GetTimeStamp(DateTime value)
        {
            return value.ToString("yyyyMMddHHmmssffff");
        }
    }
}

Now if you have an Export to Excel Button, you can generate pdf easily like this

protected void ExportToPDFLink_Click(object sender, EventArgs e)
{
    PDFExporter pdf = new PDFExporter(GetCostumers(), "customer", true);
    pdf.ExportPDF();
}

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