Convert Aspx Page Into PDF in ASP.NET

Introduction

This article explains how to export an aspx page to a PDF file.

Requirement

The only requirement is to add the DLL of "ITextSharp" to the application.

Code

In the code behind add the following namespaces: 

using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.html;
using iTextSharp.text.html.simpleparser;
using System.Drawing;

Design a page.

Place the following code on the button click event to convert the aspx page into PDF:

 

protected void Button1_Click(object sender, EventArgs e)
{
    string attachment = "attachment; filename=" + "abc" + ".pdf";
    Response.ClearContent();
    Response.AddHeader("content-disposition", attachment);
    Response.ContentType = "application/pdf";
    StringWriter s_tw = new StringWriter();
    HtmlTextWriter h_textw = new HtmlTextWriter(s_tw);
    h_textw.AddStyleAttribute("font-size", "7pt");
    h_textw.AddStyleAttribute("color", "Black");
    Panel1.RenderControl(h_textw);//Name of the Panel
    Document doc = new Document();
    doc = new Document(PageSize.A4, 5, 5, 15, 5);
    FontFactory.GetFont("Verdana", 80, iTextSharp.text.Color.RED);
    PdfWriter.GetInstance(doc, Response.OutputStream);
    doc.Open();
    StringReader s_tr = new StringReader(s_tw.ToString());
    HTMLWorker html_worker = new HTMLWorker(doc);
    html_worker.Parse(s_tr);
    doc.Close();
    Response.Write(doc);
}
public override void VerifyRenderingInServerForm(Control control)
{
}

Save all and run; an error will occur as in the following image:

This error occurs when we render a control into a response. Use the following point to resolve this error:

Add  EnableEventValidation="false" in the page directive on the source of your page at the top.

Now save all and view the page in the browser; when you click on the button to convert the apx page into a PDF it will work.