Add Cookies to HTML Page Request

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

    // Create a HTML to PDF converter object
    HtmlToPdfConverter htmlToPdfConverter = null;
    if (radioButtonUseTcpService.Checked)
        htmlToPdfConverter = new HtmlToPdfConverter(serverIP, serverPort);
    else
        htmlToPdfConverter = new HtmlToPdfConverter(true, textBoxWebServiceUrl.Text);

    // Set optional service password
    if (textBoxServicePassword.Text.Length > 0)
        htmlToPdfConverter.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
    htmlToPdfConverter.LicenseKey = "4W9+bn19bn5ue2B+bn1/YH98YHd3d3c=";

    // Set an adddional delay in seconds to wait for JavaScript or AJAX calls after page load completed
    // Set this property to 0 if you don't need to wait for such asynchcronous operations to finish
    htmlToPdfConverter.ConversionDelay = 2;

    // Add custom HTTP cookies

    if (cookie1NameTextBox.Text.Length > 0 && cookie1ValueTextBox.Text.Length > 0)
        htmlToPdfConverter.HttpRequestCookies.Add(cookie1NameTextBox.Text, cookie1ValueTextBox.Text);

    if (cookie2NameTextBox.Text.Length > 0 && cookie2ValueTextBox.Text.Length > 0)
        htmlToPdfConverter.HttpRequestCookies.Add(cookie2NameTextBox.Text, cookie2ValueTextBox.Text);

    if (cookie3NameTextBox.Text.Length > 0 && cookie3ValueTextBox.Text.Length > 0)
        htmlToPdfConverter.HttpRequestCookies.Add(cookie3NameTextBox.Text, cookie3ValueTextBox.Text);

    if (cookie4NameTextBox.Text.Length > 0 && cookie4ValueTextBox.Text.Length > 0)
        htmlToPdfConverter.HttpRequestCookies.Add(cookie4NameTextBox.Text, cookie4ValueTextBox.Text);

    if (cookie5NameTextBox.Text.Length > 0 && cookie5ValueTextBox.Text.Length > 0)
        htmlToPdfConverter.HttpRequestCookies.Add(cookie5NameTextBox.Text, cookie5ValueTextBox.Text);

    // Convert the HTML page to a PDF document in a memory buffer
    byte[] outPdfBuffer = htmlToPdfConverter.ConvertUrl(urlTextBox.Text);
}