//// This code is part of Document Solutions for Word demos.// Copyright (c) MESCIUS inc. All rights reserved.//using System;using System.IO;using System.Drawing;using System.Collections.Generic;using System.Text.RegularExpressions;using GrapeCity.Documents.Word;
namespace DsWordWeb.Demos{    // NOTE: this sample is obsolete, use the RangeBase.Replace()    // extension method instead (see ReplaceTextFmt).    //    // This sample loads an existing document, finds all occurrences    // of a certain string in it, and replaces that string with another one,    // also changing the character format of the replacement string.    // This sample is almost identical to ReplaceTextFmt    // but uses PersistentRange instead of Range.    // Its primary purpose is to illustrate the differences between    // Range and PersistentRange.    public class ReplaceTextFmt2    {        public GcWordDocument CreateDocx()        {            // The document to replace text in:            var path = Path.Combine("Resources", "WordDocs", "JsFrameworkExcerpt.docx");            // The text to find:            const string tFind = "javascript";            // The replacement:            const string tRepl = "ArabicaScroll";
            var doc = new GcWordDocument();            doc.Load(path);
            var runs = doc.Body.Runs;            List<PersistentRange> runRanges = new List<PersistentRange>(runs.Count);            foreach (var run in runs)                runRanges.Add(run.GetPersistentRange());
            foreach (var rr in runRanges)            {                var str = rr.Text;                var matches = Regex.Matches(str, tFind, RegexOptions.IgnoreCase);                if (matches.Count == 0)                    continue;
                var color = rr.ParentRun.Font.Color.RGB;                rr.Clear();                var pos = 0;                foreach (Match m in matches)                {                    rr.Runs.Add(str.Substring(pos, m.Index - pos)).Font.Color.RGB = color;                    rr.Runs.Add(tRepl).Font.Color.RGB = Color.Red;                    pos = m.Index + m.Length;                }                rr.Runs.Add(str.Substring(pos)).Font.Color.RGB = color;
                if (!string.IsNullOrEmpty(rr.Runs.First.GetRange().Text))                    throw new Exception("Unexpected");                rr.Runs.First.Delete();
                // PersistentRange is kept up to date when the document changes,                // so it should be disposed when no longer needed to improve                // performance and reduce memory consumption:                rr.Dispose();            }            // Not strictky necessary but a good practice:            runRanges.Clear();
            // Add a note at the end of the document:            doc.Body.Sections.Last.GetRange().Paragraphs.Add(                $"DsWord replaced '{tFind}' with '{tRepl}' on {Util.TimeNow():r)}.");
            // Done:            return doc;        }    }}