Convert HTML to GrayScale and CMYK PDF Documents

EVO PDF Client for .NET Documentation

EVO HTML to PDF Converter allows you to convert a HTML to PDF in RGB color space by default but you can choose to produce the PDF document in GrayScale or CMYK color space using the PdfDocumentOptionsColorSpace property. An object of PdfDocumentOptions type is exposed by the HtmlToPdfConverterPdfDocumentOptions property.

Code Sample - Convert HTML to GrayScale and CMYK PDF Documents

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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;

    // Set the PDF color space
    // By default the RGB color space is used
    if (grayScaleRadioButton.Checked)
        htmlToPdfConverter.PdfDocumentOptions.ColorSpace = ColorSpace.Gray;
    else if (cmykRadioButton.Checked)
        htmlToPdfConverter.PdfDocumentOptions.ColorSpace = ColorSpace.CMYK;

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