HiQPdf Library for .NET - HTML to PDF Converter .NET Core

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 the PDF standard used by the document
    htmlToPdfConverter.Document.PdfStandard = checkBoxPdfA.Checked ? PdfStandard.PdfA : PdfStandard.Pdf;

    // set PDF page margins
    htmlToPdfConverter.Document.Margins = new PdfMargins(5);

    // set whether to embed the true type font in PDF
    htmlToPdfConverter.Document.FontEmbedding = checkBoxFontEmbedding.Checked;

    // set triggering mode; for WaitTime mode set the wait time before convert
    switch (dropDownListTriggeringMode.SelectedValue)
    {
        case "Auto":
            htmlToPdfConverter.TriggerMode = ConversionTriggerMode.Auto;
            break;
        case "WaitTime":
            htmlToPdfConverter.TriggerMode = ConversionTriggerMode.WaitTime;
            htmlToPdfConverter.WaitBeforeConvert = int.Parse(textBoxWaitTime.Text);
            break;
        case "Manual":
            htmlToPdfConverter.TriggerMode = ConversionTriggerMode.Manual;
            break;
        default:
            htmlToPdfConverter.TriggerMode = ConversionTriggerMode.Auto;
            break;
    }

    // set header and footer
    SetHeader(htmlToPdfConverter.Document);
    SetFooter(htmlToPdfConverter.Document);

    // set the document security
    htmlToPdfConverter.Document.Security.OpenPassword = textBoxOpenPassword.Text;
    htmlToPdfConverter.Document.Security.AllowPrinting = checkBoxAllowPrinting.Checked;

    // set the permissions password too if an open password was set
    if (htmlToPdfConverter.Document.Security.OpenPassword != null && htmlToPdfConverter.Document.Security.OpenPassword != String.Empty)
        htmlToPdfConverter.Document.Security.PermissionsPassword = htmlToPdfConverter.Document.Security.OpenPassword + "_admin";

    // 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();
}

private void SetHeader(PdfDocumentControl htmlToPdfDocument)
{
    // enable header display
    htmlToPdfDocument.Header.Enabled = checkBoxAddHeader.Checked;

    if (!htmlToPdfDocument.Header.Enabled)
        return;

    // set header height
    htmlToPdfDocument.Header.Height = 50;

    float pdfPageWidth = htmlToPdfDocument.PageOrientation == PdfPageOrientation.Portrait ?
                                htmlToPdfDocument.PageSize.Width : htmlToPdfDocument.PageSize.Height;

    float headerWidth = pdfPageWidth - htmlToPdfDocument.Margins.Left - htmlToPdfDocument.Margins.Right;
    float headerHeight = htmlToPdfDocument.Header.Height;

    // set header background color
    htmlToPdfDocument.Header.BackgroundColor = System.Drawing.Color.WhiteSmoke;

    string headerImageFile = Server.MapPath("~") + @"\DemoFiles\Images\HiQPdfLogo.png";
    PdfImage logoHeaderImage = new PdfImage(5, 5, 40, System.Drawing.Image.FromFile(headerImageFile));
    htmlToPdfDocument.Header.Layout(logoHeaderImage);

    // layout HTML in header
    PdfHtml headerHtml = new PdfHtml(50, 5, @"<span style=""color:Navy; font-family:Times New Roman; font-style:italic"">
                    Quickly Create High Quality PDFs with </span><a href=""http://www.hiqpdf.com"">HiQPdf</a>", null);
    headerHtml.FitDestHeight = true;
    headerHtml.FontEmbedding = checkBoxFontEmbedding.Checked;
    htmlToPdfDocument.Header.Layout(headerHtml);

    // create a border for header

    PdfRectangle borderRectangle = new PdfRectangle(1, 1, headerWidth - 2, headerHeight - 2);
    borderRectangle.LineStyle.LineWidth = 0.5f;
    borderRectangle.ForeColor = System.Drawing.Color.Navy;
    htmlToPdfDocument.Header.Layout(borderRectangle);
}

private void SetFooter(PdfDocumentControl htmlToPdfDocument)
{
    // enable footer display
    htmlToPdfDocument.Footer.Enabled = checkBoxAddFooter.Checked;

    if (!htmlToPdfDocument.Footer.Enabled)
        return;

    // set footer height
    htmlToPdfDocument.Footer.Height = 50;

    // set footer background color
    htmlToPdfDocument.Footer.BackgroundColor = System.Drawing.Color.WhiteSmoke;

    float pdfPageWidth = htmlToPdfDocument.PageOrientation == PdfPageOrientation.Portrait ?
                                htmlToPdfDocument.PageSize.Width : htmlToPdfDocument.PageSize.Height;

    float footerWidth = pdfPageWidth - htmlToPdfDocument.Margins.Left - htmlToPdfDocument.Margins.Right;
    float footerHeight = htmlToPdfDocument.Footer.Height;

    // layout HTML in footer
    PdfHtml footerHtml = new PdfHtml(5, 5, @"<span style=""color:Navy; font-family:Times New Roman; font-style:italic"">
                    Quickly Create High Quality PDFs with </span><a href=""http://www.hiqpdf.com"">HiQPdf</a>", null);
    footerHtml.FitDestHeight = true;
    footerHtml.FontEmbedding = checkBoxFontEmbedding.Checked;
    htmlToPdfDocument.Footer.Layout(footerHtml);

    // add page numbering
    System.Drawing.Font pageNumberingFont = new System.Drawing.Font(new System.Drawing.FontFamily("Times New Roman"),
                                8, System.Drawing.GraphicsUnit.Point);
    PdfText pageNumberingText = new PdfText(5, footerHeight - 12, "Page {CrtPage} of {PageCount}", pageNumberingFont);
    pageNumberingText.HorizontalAlign = PdfTextHAlign.Center;
    pageNumberingText.EmbedSystemFont = true;
    pageNumberingText.ForeColor = System.Drawing.Color.DarkGreen;
    htmlToPdfDocument.Footer.Layout(pageNumberingText);

    string footerImageFile = Server.MapPath("~") + @"\DemoFiles\Images\HiQPdfLogo.png";
    PdfImage logoFooterImage = new PdfImage(footerWidth - 40 - 5, 5, 40, System.Drawing.Image.FromFile(footerImageFile));
    htmlToPdfDocument.Footer.Layout(logoFooterImage);

    // create a border for footer
    PdfRectangle borderRectangle = new PdfRectangle(1, 1, footerWidth - 2, footerHeight - 2);
    borderRectangle.LineStyle.LineWidth = 0.5f;
    borderRectangle.ForeColor = System.Drawing.Color.DarkGreen;
    htmlToPdfDocument.Footer.Layout(borderRectangle);
}