//// This code is part of Document Solutions for PDF .NET demos.// Copyright (c) MESCIUS inc. All rights reserved.//using System.IO;using System.Drawing;using GrapeCity.Documents.Pdf;using GrapeCity.Documents.Pdf.Annotations;
namespace DsPdfWeb.Demos{    // This sample demonstrates the use of GcPdfDocument.Redact() method.    // It loads the PDF generated by the SlidePages sample, creates    // a redact annotation on the first page, and applies it.    public class RedactArea    {        public int CreatePDF(Stream stream)        {            var doc = new GcPdfDocument();            using var fs = File.OpenRead(Path.Combine("Resources", "PDFs", "SlidePages.pdf"));            // Load the PDF containing redact annotations (areas marked for redaction):            doc.Load(fs);
            var redact = new RedactAnnotation()            {                Rect = new RectangleF(16, 16, 280, 300),                Page = doc.Pages[0],                OverlayText = "This content has been redacted.",                OverlayFillColor = Color.PaleGoldenrod            };
            // Apply the redact:            doc.Redact(redact);
            // Done:            doc.Save(stream);            return doc.Pages.Count;        }    }}