EVO HTML to PDF Converter allows you to add text notes to a PDF document. The text notes are created by adding EvoPdfTextNoteElement 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
protected void createPdfButton_Click(object sender, EventArgs e) { // Create a PDF document Document pdfDocument = new Document(); // 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(); try { // The titles font used to mark various sections of the PDF document PdfFont titleFont = pdfDocument.AddFont(new Font("Times New Roman", 10, FontStyle.Bold, GraphicsUnit.Point)); PdfFont subtitleFont = pdfDocument.AddFont(new Font("Times New Roman", 8, FontStyle.Regular, GraphicsUnit.Point)); float xLocation = 5; float yLocation = 5; // Add document title TextElement titleTextElement = new TextElement(xLocation, yLocation, "Add Text Notes to a PDF Document", titleFont); AddElementResult addElementResult = pdfPage.AddElement(titleTextElement); yLocation = addElementResult.EndPageBounds.Bottom + 15; // Add the text element string text = "Click the next icon to open the the text note:"; float textWidth = subtitleFont.GetTextWidth(text); TextElement textElement = new TextElement(xLocation, yLocation, text, subtitleFont); addElementResult = pdfPage.AddElement(textElement); RectangleF textNoteRectangle = new RectangleF(xLocation + textWidth + 1, yLocation, 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; pdfPage.AddElement(textNoteElement); yLocation = addElementResult.EndPageBounds.Bottom + 10; // Add the text element text = "This is an already opened text note:"; textWidth = subtitleFont.GetTextWidth(text); textElement = new TextElement(xLocation, yLocation, text, subtitleFont); addElementResult = pdfPage.AddElement(textElement); textNoteRectangle = new RectangleF(xLocation + textWidth + 1, yLocation, 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; pdfPage.AddElement(textNoteOpenedElement); yLocation = addElementResult.EndPageBounds.Bottom + 10; // Add the text element text = "Click the next icon to open the the help note:"; textWidth = subtitleFont.GetTextWidth(text); textElement = new TextElement(xLocation, yLocation, text, subtitleFont); addElementResult = pdfPage.AddElement(textElement); textNoteRectangle = new RectangleF(xLocation + textWidth + 1, yLocation, 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; pdfPage.AddElement(helpNoteElement); yLocation = addElementResult.EndPageBounds.Bottom + 10; // Add the text element text = "This is an already opened help note:"; textWidth = subtitleFont.GetTextWidth(text); textElement = new TextElement(xLocation, yLocation, text, subtitleFont); addElementResult = pdfPage.AddElement(textElement); textNoteRectangle = new RectangleF(xLocation + textWidth + 1, yLocation, 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; pdfPage.AddElement(helpNoteOpenedElement); yLocation = addElementResult.EndPageBounds.Bottom + 10; // Add the text element text = "Click the next icon to open the comment:"; textWidth = subtitleFont.GetTextWidth(text); textElement = new TextElement(xLocation, yLocation, text, subtitleFont); addElementResult = pdfPage.AddElement(textElement); textNoteRectangle = new RectangleF(xLocation + textWidth + 1, yLocation, 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; pdfPage.AddElement(commentNoteElement); yLocation = addElementResult.EndPageBounds.Bottom + 10; // Add the text element text = "This is an already opened comment:"; textWidth = subtitleFont.GetTextWidth(text); textElement = new TextElement(xLocation, yLocation, text, subtitleFont); addElementResult = pdfPage.AddElement(textElement); textNoteRectangle = new RectangleF(xLocation + textWidth + 1, yLocation, 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; pdfPage.AddElement(commentNoteOpenedElement); yLocation = addElementResult.EndPageBounds.Bottom + 10; // Add the text element text = "Click the next icon to open the paragraph note: "; textWidth = subtitleFont.GetTextWidth(text); textElement = new TextElement(xLocation, yLocation, text, subtitleFont); addElementResult = pdfPage.AddElement(textElement); textNoteRectangle = new RectangleF(xLocation + textWidth + 1, yLocation, 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; pdfPage.AddElement(paragraphNoteElement); yLocation = addElementResult.EndPageBounds.Bottom + 10; // Add the text element text = "Click the next icon to open the new paragraph note:"; textWidth = subtitleFont.GetTextWidth(text); textElement = new TextElement(xLocation, yLocation, text, subtitleFont); addElementResult = pdfPage.AddElement(textElement); textNoteRectangle = new RectangleF(xLocation + textWidth + 1, yLocation, 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; pdfPage.AddElement(newParagraphNoteElement); yLocation = addElementResult.EndPageBounds.Bottom + 10; // Add the text element text = "Click the next icon to open the key note:"; textWidth = subtitleFont.GetTextWidth(text); textElement = new TextElement(xLocation, yLocation, text, subtitleFont); addElementResult = pdfPage.AddElement(textElement); textNoteRectangle = new RectangleF(xLocation + textWidth + 1, yLocation, 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; pdfPage.AddElement(keyNoteElement); // Save the PDF document in a memory buffer byte[] outPdfBuffer = pdfDocument.Save(); // Send the PDF as response to browser // Set response content type Response.AddHeader("Content-Type", "application/pdf"); // Instruct the browser to open the PDF file as an attachment or inline Response.AddHeader("Content-Disposition", String.Format("attachment; filename=Text_Notes.pdf; size={0}", outPdfBuffer.Length.ToString())); // Write the PDF document buffer to HTTP response Response.BinaryWrite(outPdfBuffer); // End the HTTP response and stop the current page processing Response.End(); } finally { // Close the PDF document pdfDocument.Close(); } }