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Add Text Annotations in PDF | C#
Program.cs:
C#
using System.Diagnostics; using Bytescout.PDF; namespace TextAnnotationExample { /// <summary> /// This example demonstrates how to add a text annotation. /// </summary> class Program { static void Main() { // Create new document Document pdfDocument = new Document(); pdfDocument.RegistrationName = "demo"; pdfDocument.RegistrationKey = "demo"; // If you wish to load an existing document uncomment the line below and comment the Add page section instead // pdfDocument.Load(@".\existing_document.pdf"); // Add page Page page = new Page(PaperFormat.A4); pdfDocument.Pages.Add(page); // Add collapsed annotation (shown as a tooltip when mouse is over the icon) TextAnnotation collapsedAnnotation = new TextAnnotation(20, 20); collapsedAnnotation.Color = new ColorRGB(255, 255, 0); collapsedAnnotation.Icon = TextAnnotationIcon.Comment; collapsedAnnotation.Author = "Mr. Important"; collapsedAnnotation.Contents = "The quick brown fox jumps over the lazy dog."; page.Annotations.Add(collapsedAnnotation); // Add expanded annotation TextAnnotation expandedAnnotation = new TextAnnotation(20, 50); expandedAnnotation.Color = new ColorRGB(255, 0, 0); expandedAnnotation.Icon = TextAnnotationIcon.Note; expandedAnnotation.Open = true; expandedAnnotation.Author = "John Doe"; expandedAnnotation.Contents = "The quick brown fox jumps over the lazy dog."; page.Annotations.Add(expandedAnnotation); // Save document to file pdfDocument.Save("result.pdf"); // Cleanup pdfDocument.Dispose(); // Open result document in default associated application (for demo purpose) ProcessStartInfo processStartInfo = new ProcessStartInfo("result.pdf"); processStartInfo.UseShellExecute = true; Process.Start(processStartInfo); } } }