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# Inserting a bookmark after a specified text

Hello,

I am trying to insert a bookmark right after a specified text (lets say “toto”) but so far i am only able to find all the nodes that contain my specified text and insert my bookmark right before it.

How can i do that ?

Sincerely.

@guyyyyyyyyyyy You can achieve this using Find and Replace functionality and IReplacingCallback. For example see the following code:

Document doc = new Document(@"C:\Temp\in.docx");
FindReplaceOptions opt = new FindReplaceOptions(FindReplaceDirection.Backward);
opt.ReplacingCallback = new ReplaceEvaluatorWrapWithBookmark();
doc.Range.Replace("test", "bookmakr_name", opt);
doc.Save(@"C:\Temp\out.docx");

internal class ReplaceEvaluatorWrapWithBookmark : IReplacingCallback
{
/// <summary>
/// This method is called by the Aspose.Words find and replace engine for each match.
/// </summary>
ReplaceAction IReplacingCallback.Replacing(ReplacingArgs e)
{
Document doc = (Document)e.MatchNode.Document;

// This is a Run node that contains either the beginning or the complete match.
Node currentNode = e.MatchNode;

// The first (and may be the only) run can contain text before the match,
// in this case it is necessary to split the run.
if (e.MatchOffset > 0)
currentNode = SplitRun((Run)currentNode, e.MatchOffset);

// This array is used to store all nodes of the match for further deleting.
List<Run> runs = new List<Run>();

// Find all runs that contain parts of the match string.
int remainingLength = e.Match.Value.Length;
while (
remainingLength > 0 &&
currentNode != null &&
currentNode.GetText().Length <= remainingLength)
{
remainingLength -= currentNode.GetText().Length;

// Select the next Run node.
// Have to loop because there could be other nodes such as BookmarkStart etc.
do
{
currentNode = currentNode.NextSibling;
} while (currentNode != null && currentNode.NodeType != NodeType.Run);
}

// Split the last run that contains the match if there is any text left.
if (currentNode != null && remainingLength > 0)
{
SplitRun((Run)currentNode, remainingLength);
}

// Generate an unique bookmakr name. Another approach can be used.
string bookmarkName = e.Replacement;
while (doc.Range.Bookmarks[bookmarkName] != null)
bookmarkName += "_" + Guid.NewGuid().ToString();

// Insert a bookmakr around the matched text
BookmarkStart start = new BookmarkStart(doc, bookmarkName);
BookmarkEnd end = new BookmarkEnd(doc, bookmarkName);

runs[0].ParentNode.InsertBefore(start, runs[0]);
runs[runs.Count-1].ParentNode.InsertAfter(end, runs[runs.Count-1]);

// Signal to the replace engine to do nothing because we have already done all what we wanted.
return ReplaceAction.Skip;
}

private static Run SplitRun(Run run, int position)
{
Run afterRun = (Run)run.Clone(true);
run.ParentNode.InsertAfter(afterRun, run);
afterRun.Text = run.Text.Substring(position);
run.Text = run.Text.Substring((0), (0) + (position));
return afterRun;
}
}


The code wraps each occurrence of "test" word into a bookmark.

I had to modify the code
runs[0].ParentNode.InsertBefore(start, runs[0]);
into
runs[runs.Count - 1].ParentNode.InsertAfter(end, runs[runs.Count - 1]);

In order to insert my bookmark right after the matched text (instead of wraping it with my bookmark) but otherwise it works !

@guyyyyyyyyyyy Yes, if you need to insert a bookmark after the matched text, you should use the following code:

runs[runs.Count-1].ParentNode.InsertAfter(end, runs[runs.Count-1]);
runs[runs.Count-1].ParentNode.InsertAfter(start, runs[runs.Count-1]);


Indeed i also had to insert the BookmarkEnd before the BookmarkStart since the insertion is done right after the node.

@guyyyyyyyyyyy Alternatively you can insert end after the start, like this:

runs[runs.Count - 1].ParentNode.InsertAfter(start, runs[runs.Count - 1]);
start.ParentNode.InsertAfter(end, start);