Add Text Notes to a PDF Document

EVO PDF Client for .NET Documentation
EVO HTML to PDF Converter allows you to add text notes to a PDF document. The text notes are created by adding EvoPdf.HtmlToPdfClientTextNoteElement objects to a PDF document. You can add text notes with various types of icons to a PDF document. Also, the text notes can be initially in an open or closed state.
Code Sample - Add Text Notes to a PDF Document
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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 page to PDF document
    PdfPage pdfPage = pdfDocument.AddPage();

    // The titles font used to mark various sections of the PDF document
    PdfFont titleFont = new PdfFont("Times New Roman", 10, true);
    titleFont.Bold = true;
    PdfFont subtitleFont = new PdfFont("Times New Roman", 8, true);

    // Add document title
    TextElement titleTextElement = new TextElement(5, 5, "Add Text Notes to a PDF Document", titleFont);
    pdfPage.AddElement(titleTextElement);

    // Add the text element
    string text = "Click the next icon to open the the text note:";
    TextElement textElement = new TextElement(0, 0, 200, text, subtitleFont);
    pdfDocument.AddElement(textElement, 10);

    RectangleFloat textNoteRectangle = new RectangleFloat(0, 0, 10, 10);

    // Create the text note
    TextNoteElement textNoteElement = new TextNoteElement(textNoteRectangle, "This is an initially closed text note");
    textNoteElement.NoteIcon = TextNoteIcon.Note;
    textNoteElement.Open = false;
    pdfDocument.AddElement(textNoteElement, 10, true, false, 0, true, false);

    // Add the text element
    text = "This is an already opened text note:";
    textElement = new TextElement(0, 0, 200, text, subtitleFont);
    pdfDocument.AddElement(textElement, 5, false, 10, true);

    textNoteRectangle = new RectangleFloat(0, 0, 10, 10);

    // Create the text note
    TextNoteElement textNoteOpenedElement = new TextNoteElement(textNoteRectangle, "This is an initially opened text note");
    textNoteOpenedElement.NoteIcon = TextNoteIcon.Note;
    textNoteOpenedElement.Open = true;
    pdfDocument.AddElement(textNoteOpenedElement, 10, true, false, 0, true, false);


    // Add the text element
    text = "Click the next icon to open the the help note:";
    textElement = new TextElement(0, 0, 200, text, subtitleFont);
    pdfDocument.AddElement(textElement, 5, false, 10, true);

    textNoteRectangle = new RectangleFloat(0, 0, 10, 10);

    // Create the text note
    TextNoteElement helpNoteElement = new TextNoteElement(textNoteRectangle, "This is an initially closed help note");
    helpNoteElement.NoteIcon = TextNoteIcon.Help;
    helpNoteElement.Open = false;
    pdfDocument.AddElement(helpNoteElement, 10, true, false, 0, true, false);

    // Add the text element
    text = "This is an already opened help note:";
    textElement = new TextElement(0, 0, 200, text, subtitleFont);
    pdfDocument.AddElement(textElement, 5, false, 10, true);

    textNoteRectangle = new RectangleFloat(0, 0, 10, 10);

    // Create the text note
    TextNoteElement helpNoteOpenedElement = new TextNoteElement(textNoteRectangle, "This is an initially opened help note");
    helpNoteOpenedElement.NoteIcon = TextNoteIcon.Help;
    helpNoteOpenedElement.Open = true;
    pdfDocument.AddElement(helpNoteOpenedElement, 10, true, false, 0, true, false);

    // Add the text element
    text = "Click the next icon to open the comment:";
    textElement = new TextElement(0, 0, 200, text, subtitleFont);
    pdfDocument.AddElement(textElement, 5, false, 10, true);

    textNoteRectangle = new RectangleFloat(0, 0, 10, 10);

    // Create the text note
    TextNoteElement commentNoteElement = new TextNoteElement(textNoteRectangle, "This is an initially closed comment note");
    commentNoteElement.NoteIcon = TextNoteIcon.Comment;
    commentNoteElement.Open = false;
    pdfDocument.AddElement(commentNoteElement, 10, true, false, 0, true, false);


    // Add the text element
    text = "This is an already opened comment:";
    textElement = new TextElement(0, 0, 200, text, subtitleFont);
    pdfDocument.AddElement(textElement, 5, false, 10, true);

    textNoteRectangle = new RectangleFloat(0, 0, 10, 10);

    // Create the text note
    TextNoteElement commentNoteOpenedElement = new TextNoteElement(textNoteRectangle, "This is an initially opened comment note");
    commentNoteOpenedElement.NoteIcon = TextNoteIcon.Comment;
    commentNoteOpenedElement.Open = true;
    pdfDocument.AddElement(commentNoteOpenedElement, 10, true, false, 0, true, false);

    // Add the text element
    text = "Click the next icon to open the paragraph note: ";
    textElement = new TextElement(0, 0, 200, text, subtitleFont);
    pdfDocument.AddElement(textElement, 5, false, 10, true);

    textNoteRectangle = new RectangleFloat(0, 0, 10, 10);

    // Create the text note
    TextNoteElement paragraphNoteElement = new TextNoteElement(textNoteRectangle, "This is an initially closed paragraph note");
    paragraphNoteElement.NoteIcon = TextNoteIcon.Paragraph;
    paragraphNoteElement.Open = false;
    pdfDocument.AddElement(paragraphNoteElement, 10, true, false, 0, true, false);

    // Add the text element
    text = "Click the next icon to open the new paragraph note:";
    textElement = new TextElement(0, 0, 200, text, subtitleFont);
    pdfDocument.AddElement(textElement, 5, false, 10, true);

    textNoteRectangle = new RectangleFloat(0, 0, 10, 10);

    // Create the text note
    TextNoteElement newParagraphNoteElement = new TextNoteElement(textNoteRectangle, "This is an initially closed new paragraph note");
    newParagraphNoteElement.NoteIcon = TextNoteIcon.NewParagraph;
    newParagraphNoteElement.Open = false;
    pdfDocument.AddElement(newParagraphNoteElement, 10, true, false, 0, true, false);

    // Add the text element
    text = "Click the next icon to open the key note:";
    textElement = new TextElement(0, 0, 200, text, subtitleFont);
    pdfDocument.AddElement(textElement, 5, false, 10, true);

    textNoteRectangle = new RectangleFloat(0, 0, 10, 10);

    // Create the text note
    TextNoteElement keyNoteElement = new TextNoteElement(textNoteRectangle, "This is an initially closed key note");
    keyNoteElement.NoteIcon = TextNoteIcon.Key;
    keyNoteElement.Open = false;
    pdfDocument.AddElement(keyNoteElement, 10, true, false, 0, true, false);

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