//// 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.Common;using GrapeCity.Documents.Pdf;
namespace DsPdfWeb.Demos{    // This sample loads the PDF file created by the BalancedColumns sample,    // finds all occurrences of the words 'lorem' and 'ipsum' in the loaded document,    // and highlights these two words using different colors.    public class FindText    {        public int CreatePDF(Stream stream)        {            // The original file stream must be kept open while working with the loaded PDF, see LoadPDF for details:            using var fs = File.OpenRead(Path.Combine("Resources", "PDFs", "BalancedColumns.pdf"));            var doc = new GcPdfDocument();            doc.Load(fs);            // Find all 'lorem', using case-insensitive word search:            var findsLorem = doc.FindText(                new FindTextParams("lorem", true, false),                OutputRange.All);            // Ditto for 'ipsum':            var findsIpsum = doc.FindText(                new FindTextParams("ipsum", true, false),                OutputRange.All);
            // Highlight all 'lorem' using semi-transparent orange red:            foreach (var find in findsLorem)                foreach (var ql in find.Bounds)                    doc.Pages[find.PageIndex].Graphics.FillPolygon(ql, Color.FromArgb(100, Color.OrangeRed));            // Put a violet red border around all 'ipsum':            foreach (var find in findsIpsum)                foreach (var ql in find.Bounds)                    doc.Pages[find.PageIndex].Graphics.DrawPolygon(ql, Color.MediumVioletRed);
            // Done:            doc.Save(stream);            return doc.Pages.Count;        }    }}