//// This code is part of Document Solutions for Word demos.// Copyright (c) MESCIUS inc. All rights reserved.//using System;using System.IO;using System.Linq;using GrapeCity.Documents.Word;
namespace DsWordWeb.Demos{    // This sample shows how to insert the whole body of an existing DOCX into     // another document at a location where an arbitrary search string is found.    // One interesting point in this sample is that the code ensures that the    // insert position is valid, i.e. the source content (all paragraphs of    // the source document) can be inserted at the found point. If necessary,    // the target is split so that there is a content object of a valid type    // at the point where the source is to be inserted.    // In this sample, the target document is JsFrameworkExcerpt.    // The source document inserted is SampleParagraphs, and it is inserted    // on page 2 of the source document, immediately before the string    // "software design principles".    public class InsertAtFound    {        public GcWordDocument CreateDocx()        {            // The string to find. The source document will be inserted before this string:            const string findPattern = "software design principles";
            // Target document where the source document will be inserted:            var doc = new GcWordDocument();            doc.Load(Path.Combine("Resources", "WordDocs", "JsFrameworkExcerpt.docx"));
            // Source document that will be inserted into the target:            var sourceDoc = new GcWordDocument();            sourceDoc.Load(Path.Combine("Resources", "WordDocs", "SampleParagraphs.docx"));            // Note: the inserted document starts with a 'Heading 1', which adds a page break.            // We change it to 'Heading 2' to avoid this so that the result is more clear:            sourceDoc.Body.Paragraphs.First.Style = sourceDoc.Styles[BuiltInStyleId.Heading2];
            // Find the first occurrence of the search string:            var findResult = doc.Body.Find(findPattern, new FindOptions(doc) { IgnoreCase = true }).FirstOrDefault();            if (findResult == null)                throw new Exception("Unexpected: search string not found.");
            // Find a valid insertion point near the found string:            var insertObject = CreateInsertPoint(findResult);
            // Copy the source document to the target at insertion point:            sourceDoc.Body.CopyTo(insertObject.GetRange(), InsertLocation.Before);
            // Done:            return doc;        }
        // Walk up the parent chain and determine where we are - inside body, cell or contentcontrol.        // Return the original object if we are inside body or cell.        // Return contentcontrol if we are inside contentcontrol.        private static ContentObject GetAnchorObject(ContentObject testedObject)        {            var originalObject = testedObject;            while (true)            {                if (testedObject.ParentContent == null)                    return originalObject;                else if (testedObject is Cell)                    return originalObject;                else if (testedObject is ContentControl)                    return testedObject;                else                    testedObject = testedObject.ParentContent;            }        }
        // This method assumes that testObject is always an entity inside a paragraph.        private static Paragraph GetParentParagraph(ContentObject testObject)        {            while (testObject != null)            {                if (testObject is Paragraph)                    return (Paragraph)testObject;                testObject = testObject.ParentContent;            }            throw new ArgumentException("testObject is not inside a paragraph.");        }
        private static ContentObject CreateInsertPoint(FindResult fr)        {            var anchorObject = GetAnchorObject(fr.Range.First());            var foundParagraph = GetParentParagraph(anchorObject);
            if (fr.StartIndex > 0 && anchorObject is Text)                anchorObject = ((Text)anchorObject).Split(fr.StartIndex);            if (foundParagraph == anchorObject)                anchorObject = foundParagraph.Split(anchorObject, InsertLocation.End);            else                anchorObject = foundParagraph.Split(anchorObject, InsertLocation.Before);            return anchorObject;        }    }}