Free HTML to PDF Converter for .NET and C#

protected void buttonConvertToPdf_Click(object sender, EventArgs e)
{
    // create the HTML to PDF converter
    HtmlToPdf htmlToPdfConverter = new HtmlToPdf();

    // set browser width
    htmlToPdfConverter.BrowserWidth = int.Parse(textBoxBrowserWidth.Text);

    // set browser height if specified, otherwise use the default
    if (textBoxBrowserHeight.Text.Length > 0)
        htmlToPdfConverter.BrowserHeight = int.Parse(textBoxBrowserHeight.Text);

    // set HTML Load timeout
    htmlToPdfConverter.HtmlLoadedTimeout = int.Parse(textBoxLoadHtmlTimeout.Text);

    // set PDF page size and orientation
    htmlToPdfConverter.Document.PageSize = GetSelectedPageSize();
    htmlToPdfConverter.Document.PageOrientation = GetSelectedPageOrientation();

    // set PDF page margins
    htmlToPdfConverter.Document.Margins = new PdfMargins(0);

    // set a wait time before starting the conversion
    htmlToPdfConverter.WaitBeforeConvert = int.Parse(textBoxWaitTime.Text);

    // convert HTML to PDF
    byte[] pdfBuffer = null;

    if (radioButtonConvertUrl.Checked)
    {
        // convert URL to a PDF memory buffer
        string url = textBoxUrl.Text;

        pdfBuffer = htmlToPdfConverter.ConvertUrlToMemory(url);
    }
    else
    {
        // convert HTML code
        string htmlCode = textBoxHtmlCode.Text;
        string baseUrl = textBoxBaseUrl.Text;

        // convert HTML code to a PDF memory buffer
        pdfBuffer = htmlToPdfConverter.ConvertHtmlToMemory(htmlCode, baseUrl);
    }

    // inform the browser about the binary data format
    HttpContext.Current.Response.AddHeader("Content-Type", "application/pdf");

    // let the browser know how to open the PDF document, attachment or inline, and the file name
    HttpContext.Current.Response.AddHeader("Content-Disposition", String.Format("{0}; filename=HtmlToPdf.pdf; size={1}",
        checkBoxOpenInline.Checked ? "inline" : "attachment", pdfBuffer.Length.ToString()));

    // write the PDF buffer to HTTP response
    HttpContext.Current.Response.BinaryWrite(pdfBuffer);

    // call End() method of HTTP response to stop ASP.NET page processing
    HttpContext.Current.Response.End();
}