How to export Html page to pdf using itextsharp

In this article I will explain how to export ASP.Net Web Page to PDF i.e. Portable Document Format.

So let’s start building the sample.

Step1: you need to download Itextsharp you can refer to this article how you can download Itextsharp and add its reference to your project

Step2: Create a page with image some text and an HTML table. Also there’s an export button on click of which we will export the page to PDF.

<div>

         

        <img  alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjGdMyPJD_N0rauzUJj2vqH70orjQZrthEpaYoYNn00xuR300bAHEC1lxKteRlpzPwzUe2DAyC8gp_8GY9JkRlu8Qdxp6OIyUA_5OjPmiK17u4jWG-4bsjumMBSZ-304WTeIO3PIoJY-8/s1600/happy-face.png" />

       

        </div>

        <br />

&nbsp;<div style = "font-family:Arial; color:Fuchsia;">This is Demo to convert html page to pdf using ItextSharp<br />

            <br />

        </div>

     <div>

     <table border = "1" width = "100" style="background-color:green;color:white;" >

     <tr><td>Name</td><td>Age</td></tr>

     <tr><td>Tes1</td><td>14</td></tr>

     <tr><td>Tes2</td><td>13</td></tr>

     <tr><td>Tes3</td><td>12</td></tr>

     </table>

     </div>

     <div>

    <asp:Button ID="btnExport" runat="server" Text="Export"

         onclick="btnExport_Click" /></div>

        <asp:Label ID="Label1" runat="server" Text="This label and Above button will not appear in exported file"></asp:Label>

Step3:

You will need to import the following namespaces in your code.

C#

using System.IO;

using iTextSharp.text;

using iTextSharp.text.html.simpleparser;

using iTextSharp.text.pdf;

Step4:

The below event handler is executed on the click of the export button.

 public override void VerifyRenderingInServerForm(Control control)

    {

        /* Verifies that the control is rendered */

    }

    protected void btnExport_Click(object sender, EventArgs e)

    {

        Response.ContentType = "application/pdf";

        Response.AddHeader("content-disposition", "attachment;filename=ConvertedPDF.pdf");

        Response.Cache.SetCacheability(HttpCacheability.NoCache);

        StringWriter sw = new StringWriter();

        HtmlTextWriter hw = new HtmlTextWriter(sw);

        this.Page.RenderControl(hw);

        StringReader sr = new StringReader(sw.ToString());

        Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 100f, 0f);

        HTMLWorker htmlparser = new HTMLWorker(pdfDoc);

        PdfWriter.GetInstance(pdfDoc, Response.OutputStream);

        pdfDoc.Open();

        htmlparser.Parse(sr);

        pdfDoc.Close();

        Response.Write(pdfDoc);

        Response.End();

    }

If you observe above code I added one function that is VerifyRenderingInServerForm this function is used to avoid the error like “control must be placed in inside of form tag”. If we set VerifyRenderingInServerForm function then compiler will think that controls rendered before exporting and our functionality will work perfectly

Note: If in your Exported pdf images are coming this is due to path issue you must check image path you have this issue