Convert from HTML to PDF in CSharp VB and ASP.NET with a Free 3rd Party Library

Converting from html to pdf is not an easy task. There are some tools that can do that, but most of them cost thousands of dollars. SelectPdf offers a Community Edition (FREE) of the powerful Html To Pdf Converter for .NET that can be found in the full featured pdf library.

 
 
 
 
 
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5/10/2019
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C#
VB.NET
using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using SelectPdf;

namespace SelectPdf.Samples
{
    public partial class convert_current_page_to_pdf : System.Web.UI.Page
    {
        private bool startConversion = false;

        protected void BtnCreatePdf_Click(object sender, EventArgs e)
        {
            startConversion = true;
        }

        protected override void Render(HtmlTextWriter writer)
        {
            if (startConversion)
            {
                // get html of the page
                TextWriter myWriter = new StringWriter();
                HtmlTextWriter htmlWriter = new HtmlTextWriter(myWriter);
                base.Render(htmlWriter);

                // instantiate a html to pdf converter object
                HtmlToPdf converter = new HtmlToPdf();

                // create a new pdf document converting the html string of the page
                PdfDocument doc = converter.ConvertHtmlString(
                    myWriter.ToString(), Request.Url.AbsoluteUri);

                // save pdf document
                doc.Save(Response, false, "Sample.pdf");

                // close pdf document
                doc.Close();
            }
            else
            {
                // render web page in browser
                base.Render(writer);
            }
        }
    }
}