Add Header and Footer in External PDFs

protected void createPdf()
{
    // Get the server IP and port
    String serverIP = textBoxServerIP.Text;
    uint serverPort = uint.Parse(textBoxServerPort.Text);

    // Create a PDF document
    Document pdfDocument = null;
    if (radioButtonUseTcpService.Checked)
        pdfDocument = new Document(serverIP, serverPort);
    else
        pdfDocument = new Document(true, textBoxWebServiceUrl.Text);

    // Set optional service password
    if (textBoxServicePassword.Text.Length > 0)
        pdfDocument.ServicePassword = textBoxServicePassword.Text;

    // Set license key received after purchase to use the converter in licensed mode
    // Leave it not set to use the converter in demo mode
    pdfDocument.LicenseKey = "4W9+bn19bn5ue2B+bn1/YH98YHd3d3c=";

    // Add a PDF page to PDF document
    PdfPage pdfPage = pdfDocument.AddPage();

    // Add a default document header
    AddHeader(pdfDocument, true);

    // Add a default document footer
    AddFooter(pdfDocument, true, true);

    // Create a HTML to PDF element to add to document
    HtmlToPdfElement htmlToPdfElement = new HtmlToPdfElement(0, 0, urlTextBox.Text);

    // Optionally set a delay before conversion to allow asynchonous scripts to finish
    htmlToPdfElement.ConversionDelay = 2;

    // Add HTML to PDF element to document
    pdfPage.AddElement(htmlToPdfElement);

    // Insert an external PDF document in the beginning of the final PDF document
    string pdfFileBefore = Server.MapPath("~/DemoAppFiles/Input/PDF_Files/Merge_Before_Conversion.pdf");
    pdfDocument.InsertDocument(0, pdfFileBefore, addHeaderFooterInInsertedPdfCheckBox.Checked,
                    showHeaderInFirstPageCheckBox.Checked, showFooterInFirstPageCheckBox.Checked);

    // Append an external PDF document at the end of the final PDF document
    string pdfFileAfter = Server.MapPath("~/DemoAppFiles/Input/PDF_Files/Merge_After_Conversion.pdf");
    pdfDocument.AppendDocument(pdfFileAfter, addHeaderFooterInAppendedPdfCheckBox.Checked, true, true);

    // Save the PDF document in a memory buffer
    byte[] outPdfBuffer = pdfDocument.Save();
}

/// <summary>
/// Add a header to document
/// </summary>
/// <param name="pdfDocument">The PDF document object</param>
/// <param name="drawHeaderLine">A flag indicating if a line should be drawn at the bottom of the header</param>
private void AddHeader(Document pdfDocument, bool drawHeaderLine)
{
    string headerHtmlString = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/HTML_Files/Header_HTML.html"));
    string headerBaseUrl = "http://www.evopdf.com/demo/DemoAppFiles/Input/HTML_Files/";

    // Create the document footer template
    pdfDocument.AddHeaderTemplate(60);

    // Create a HTML element to be added in header
    HtmlToPdfElement headerHtml = new HtmlToPdfElement(headerHtmlString, headerBaseUrl);

    // Set the HTML element to fit the container height
    headerHtml.FitHeight = true;

    // Add HTML element to header
    pdfDocument.Header.AddElement(headerHtml);

    if (drawHeaderLine)
    {
        float headerWidth = pdfDocument.GetPage(0).PageSize.Width;
        float headerHeight = pdfDocument.Header.Height;

        // Create a line element for the bottom of the header
        LineElement headerLine = new LineElement(0, headerHeight - 1, headerWidth, headerHeight - 1);

        // Set line color
        headerLine.ForeColor = RgbColor.Gray;

        // Add line element to the bottom of the header
        pdfDocument.Header.AddElement(headerLine);
    }
}

/// <summary>
/// Add a footer to document
/// </summary>
/// <param name="pdfDocument">The PDF document object</param>
/// <param name="addPageNumbers">A flag indicating if the page numbering is present in footer</param>
/// <param name="drawFooterLine">A flag indicating if a line should be drawn at the top of the footer</param>
private void AddFooter(Document pdfDocument, bool addPageNumbers, bool drawFooterLine)
{
    string footerHtmlString = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/HTML_Files/Footer_HTML.html"));
    string footerBaseUrl = "http://www.evopdf.com/demo/DemoAppFiles/Input/HTML_Files/";

    // Create the document footer template
    pdfDocument.AddFooterTemplate(60);

    // Set footer background color
    RectangleElement backColorRectangle = new RectangleElement(0, 0, pdfDocument.Footer.Width, pdfDocument.Footer.Height);
    backColorRectangle.BackColor = RgbColor.WhiteSmoke;
    pdfDocument.Footer.AddElement(backColorRectangle);

    // Create a HTML element to be added in footer
    HtmlToPdfElement footerHtml = new HtmlToPdfElement(footerHtmlString, footerBaseUrl);

    // Set the HTML element to fit the container height
    footerHtml.FitHeight = true;

    // Add HTML element to footer
    pdfDocument.Footer.AddElement(footerHtml);

    // Add page numbering
    if (addPageNumbers)
    {
        // Create a text element with page numbering place holders &p; and & P;
        TextElement footerText = new TextElement(0, 30, "Page &p; of &P;  ", new PdfFont("Times New Roman", 10, true));

        // Align the text at the right of the footer
        footerText.TextAlign = HorizontalTextAlign.Right;

        // Set page numbering text color
        footerText.ForeColor = RgbColor.Navy;

        // Embed the text element font in PDF
        footerText.EmbedSysFont = true;

        // Add the text element to footer
        pdfDocument.Footer.AddElement(footerText);
    }

    if (drawFooterLine)
    {
        float footerWidth = pdfDocument.GetPage(0).PageSize.Width;

        // Create a line element for the top of the footer
        LineElement footerLine = new LineElement(0, 0, footerWidth, 0);

        // Set line color
        footerLine.ForeColor = RgbColor.Gray;

        // Add line element to the bottom of the footer
        pdfDocument.Footer.AddElement(footerLine);
    }
}