How to clone and add a paragraph with bookmarks in the same Word document

Syncfusion® Essential® DocIO is a .NET Word library used to create, read, edit, and convert Word documents programmatically without Microsoft Word or interop dependencies. Using this library, you can clone and add a paragraph with bookmarks in the same Word document using C#.

In Microsoft Word, a bookmark can only exist in one place at a time. If you try to insert the same bookmark name in a new location, Microsoft Word will remove it from the previous place and add it to the new one. This means that each bookmark name can only mark one specific spot in a document.

To clone and add a paragraph with bookmarks in the same Word document, follow the steps below:

• Open the Word document containing a paragraph with an outer bookmark and any inner bookmarks within that paragraph.
• Extract the content of the outer bookmark and create a cloned section of this content for later insertion.
• Remove the original bookmarks from the document, including any inner bookmarks within the paragraph, to prevent duplication across multiple locations due to Microsoft Word’s bookmark behavior.
• Insert the cloned paragraph with bookmarks directly after the original bookmarked paragraph.

Steps to clone and add a paragraph with bookmarks in the same Word document:

1. Create a new .NET Core console application project.
2. Install the Syncfusion.DocIO.Net.Core NuGet package as a reference to your project from NuGet.org.
   
   

3. Include the following namespaces in Program.cs file
   C#

using Syncfusion.DocIO.DLS;
using Syncfusion.DocIO;
using System.IO;

4. Use the following code example to clone and add a paragraph with bookmarks in the same Word document.
   C#

using (FileStream fileStreamPath = new FileStream(Path.GetFullPath(@"Data/Input.docx"), FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
   //Open an existing Word document.
   using (WordDocument document = new WordDocument(fileStreamPath, FormatType.Automatic))
   {
       //Create the bookmark navigator instance to access the bookmark.
       BookmarksNavigator bookmarkNavigator = new BookmarksNavigator(document);
       //Moves the virtual cursor to the location before the end of the bookmark "MainContent".
       bookmarkNavigator.MoveToBookmark("MainContent");
       //Get the content of the "MainContent" bookmark as WordDocumentPart.
       WordDocumentPart wordDocumentPart = bookmarkNavigator.GetContent();

       //Find the "MainContent" bookmark in the document by its name.
       Bookmark bookmark = document.Bookmarks.FindByName("MainContent");
       //Identify the parent text body of the bookmark.
       WTextBody textbody = bookmark.BookmarkStart.OwnerParagraph.Owner as WTextBody;
       //Determine the index of the paragraph containing the bookmark.
       int index = textbody.ChildEntities.IndexOf(bookmark.BookmarkStart.OwnerParagraph);

       //Remove the "MainContent" bookmark from the document.
       document.Bookmarks.Remove(bookmark);
       //Remove inner bookmarks (SubContent1, SubContent2, SubContent3) from the document.
       bookmark = document.Bookmarks.FindByName("SubContent1");
       document.Bookmarks.Remove(bookmark);
       bookmark = document.Bookmarks.FindByName("SubContent2");
       document.Bookmarks.Remove(bookmark);
       bookmark = document.Bookmarks.FindByName("SubContent3");
       document.Bookmarks.Remove(bookmark);

       //Insert the cloned content of the "MainContent" bookmark after the original bookmark paragraph.
       if (wordDocumentPart.Sections[0].ChildEntities[0] is WTextBody)
       {
           WTextBody clonedTextBody = wordDocumentPart.Sections[0].ChildEntities[0] as WTextBody;
           for (int i = 0, j = index + 1; i < clonedTextBody.ChildEntities.Count; i++, j++)
           {
               textbody.ChildEntities.Insert(j, clonedTextBody.ChildEntities[i]);
           }
       }
       //Close the WordDocumentPart instance.
       wordDocumentPart.Close();
       //Create file stream.
       using (FileStream outputFileStream = new FileStream(Path.GetFullPath(@"Output/Output.docx"), FileMode.Create, FileAccess.ReadWrite))
       {
           //Save the Word document to file stream.
           document.Save(outputFileStream, FormatType.Docx);
       }
   }
}

You can download a complete working sample to clone and add a paragraph with bookmarks in the same Word document from the GitHub.

By executing the program, you will get the Word document as follows.

Take a moment to peruse the documentation where you can find basic Word document processing options along with the features like mail merge, merge, split, and compare Word documents, find and replace text in the Word document, protect the Word documents, and most importantly, the PDF and Image conversions with code examples.

Conclusion

I hope you enjoyed learning how to replace the table cell content in .NET Core Word document.

You can refer to our ASP.NET Core DocIO feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our ASP.NET Core DocIO example to understand how to create and manipulate data.

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