Add HTTP Headers to HTML Page Request

EVO PDF Client for .NET Documentation

EVO HTML to PDF Converter allows you to add HTTP headers when you request the HTML page. There are various standard HTTP headers offering important information to web server about the capabilities of the browser like the accepted content type, accepted encoding, accepted language, connection mode, user agent.

The HTTP headers to be used when the HTML page to convert is requested can be added to HtmlToPdfConverterHttpRequestHeaders collection.

Code Sample - Add HTTP Headers to HTML Page Request

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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 headers

    if (header1NameTextBox.Text.Length > 0 && header1ValueTextBox.Text.Length > 0)
        htmlToPdfConverter.HttpRequestHeaders.Add(header1NameTextBox.Text, header1ValueTextBox.Text);

    if (header2NameTextBox.Text.Length > 0 && header2ValueTextBox.Text.Length > 0)
        htmlToPdfConverter.HttpRequestHeaders.Add(header2NameTextBox.Text, header2ValueTextBox.Text);

    if (header3NameTextBox.Text.Length > 0 && header3ValueTextBox.Text.Length > 0)
        htmlToPdfConverter.HttpRequestHeaders.Add(header3NameTextBox.Text, header3ValueTextBox.Text);

    if (header4NameTextBox.Text.Length > 0 && header4ValueTextBox.Text.Length > 0)
        htmlToPdfConverter.HttpRequestHeaders.Add(header4NameTextBox.Text, header4ValueTextBox.Text);

    if (header5NameTextBox.Text.Length > 0 && header5ValueTextBox.Text.Length > 0)
        htmlToPdfConverter.HttpRequestHeaders.Add(header5NameTextBox.Text, header5ValueTextBox.Text);

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