Create PDF Documents

EVO PDF Client for .NET Documentation

EVO HTML to PDF Converter allows you to create empty PDF documents to which you can add various types of elements: HTML, text, images, graphics. You can save the created PDF document to a file, a stream or in a memory buffer. A PDF document is represented in API by a EvoPdf.HtmlToPdfClientDocument object.

When you create a PDF document you can choose the PDF Standard and the Color Space in Document object constructor. You can also choose the PDF page size, orientation and margins when you add a page to PDF document using the DocumentAddPage(PdfPageSize, PdfMargins, PdfPageOrientation) method.

Code Sample - Create PDF Documents

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protected void createPdf()
{
    // Get the PDF Standard
    // By default the Full PDF standard is used
    PdfStandardSubset pdfStandard = PdfStandardSubset.Full;
    if (pdfARadioButton.Checked)
        pdfStandard = PdfStandardSubset.Pdf_A_1b;
    else if (pdfXRadioButton.Checked)
        pdfStandard = PdfStandardSubset.Pdf_X_1a;

    // Get the Color Space
    // By default the RGB color space is used
    ColorSpace pdfColorSpace = ColorSpace.RGB;
    if (grayScaleRadioButton.Checked)
        pdfColorSpace = ColorSpace.Gray;
    else if (cmykRadioButton.Checked)
        pdfColorSpace = ColorSpace.CMYK;

    // Create the PDF document
    Document pdfDocument = null;

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

    if (pdfStandard == PdfStandardSubset.Full && pdfColorSpace == ColorSpace.RGB)
    {
        // Create a PDF document with default standard and color space
        if (radioButtonUseTcpService.Checked)
            pdfDocument = new Document(serverIP, serverPort);
        else
            pdfDocument = new Document(true, textBoxWebServiceUrl.Text);
    }
    else
    {
        // Create a PDF document with the selected standard and color space
        if (radioButtonUseTcpService.Checked)
            pdfDocument = new Document(serverIP, serverPort, pdfStandard, pdfColorSpace);
        else
            pdfDocument = new Document(true, textBoxWebServiceUrl.Text, pdfStandard, pdfColorSpace);
    }

    // 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=";

    // Get the selected PDF page size
    PdfPageSize pdfPageSize = SelectedPdfPageSize();

    // Get the selected PDF page orientation
    PdfPageOrientation pdfPageOrientation = SelectedPdfPageOrientation();

    // Get the PDF page margins
    PdfMargins pdfPageMargins = new PdfMargins(float.Parse(leftMarginTextBox.Text), float.Parse(rightMarginTextBox.Text),
            float.Parse(topMarginTextBox.Text), float.Parse(bottomMarginTextBox.Text));

    // Create a PDF page in PDF document
    PdfPage firstPdfPage = pdfDocument.AddPage(pdfPageSize, pdfPageMargins, pdfPageOrientation);

    // The URL of the HTML page to convert to PDF
    string urlToConvert = "http://www.evopdf.com";

    // Create the HTML to PDF element
    HtmlToPdfElement htmlToPdfElement = new HtmlToPdfElement(urlToConvert);

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

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

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