How to Convert HTML to PDF Using iTextSharp
iTextSharp is part of the iText open source Java library for PDF generation written in C# for the .NET platform. PDFs are fixed-size documents that are frequently used to provide website printable content.
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Instructions
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Open a C# editor.
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Create a C# file and add the following code.
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Use a name space to call the iTextSharp library:
using iTextSharp.text;
using iTextSharp.text.pdf;
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Call an inbuilt class in iTextSharp and set the StringBuilder to empty:
Document document = new Document(PageSize.A4, 80, 50, 30, 65);
StringBuilder strData = new StringBuilder(string.Empty);
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Add a Path for the HTML to be generated from GridView content:
string strHTMLpath = Server.MapPath("MyHTML.html");
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Set the path for the PDF file to build:
string strPDFpath = Server.MapPath("MyPDF.pdf");
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Call the data from the HTML file and render the file:
StringWriter sw = new StringWriter();
sw.WriteLine(Environment.NewLine);
sw.WriteLine(Environment.NewLine);
sw.WriteLine(Environment.NewLine);
sw.WriteLine(Environment.NewLine);
HtmlTextWriter htw = new HtmlTextWriter(sw);
gvSerchResult.AllowPaging = false;
gvSerchResult.AllowSorting = false;
BindGridView();
gvSerchResult.RenderControl(htw);
StreamWriter strWriter = new StreamWriter(strHTMLpath, false, Encoding.UTF8);
strWriter.Write("<html><head></head><body>" + htw.InnerWriter.ToString() + "</body></html>");
strWriter.Close();
strWriter.Dispose();
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Use the parser to convert the HTML content to a PDF:
iTextSharp.text.html.simpleparser.
StyleSheet styles = new iTextSharp.text.html.simpleparser.StyleSheet();
styles.LoadTagStyle("ol", "leading", "16,0");
PdfWriter.GetInstance(document, new FileStream(strPDFpath, FileMode.Create));
document.Open();
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Set the font styles for the elements on page and add the page items:
ArrayList objects;
styles.LoadTagStyle("li", "face", "garamond");
styles.LoadTagStyle("span", "size", "8px");
styles.LoadTagStyle("body", "font-family", "times new roman");
styles.LoadTagStyle("body", "font-size", "12px");
document.NewPage();
objects = iTextSharp.text.html.simpleparser.
HTMLWorker.ParseToList(new StreamReader(strHTMLpath, Encoding.Default), styles);
for (int k = 0; k < objects.Count; k++)
{
document.Add((IElement)objects[k]);
}
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Clear all the variables used from memory and close:
{
document.Close();
Response.Write(Server.MapPath("~/" + strPDFpath));
Response.ClearContent();
Response.ClearHeaders();
Response.AddHeader("Content-Disposition", "attachment; filename=" + strPDFpath);
Response.ContentType = "application/octet-stream";
Response.WriteFile(Server.MapPath("~/" + strPDFpath));
Response.Flush();
Response.Close();
if (File.Exists(Server.MapPath("~/" + strPDFpath)))
{
File.Delete(Server.MapPath("~/" + strPDFpath));
}
}
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Run the C# file to create the PDF file from the HTML file.
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References
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