Free Support Forum - aspose.com

Replace text with an image in RTF document

Hi support,

I’m trying to do following with Aspose Words library:

  1. Search for specific text (e.g, @@)
  2. Replace this text with an image.
  3. Save the document.

Can you please tell me if this is possible?

@Maverrick2k4,

You can meet this requirement by using the following code:

public class Replacer : IReplacingCallback
{
    public Replacer()
    {

    }

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

        run.ParentNode.InsertAfter(afterRun, run);
        return afterRun;
    }

    ReplaceAction IReplacingCallback.Replacing(ReplacingArgs e)
    {
        // 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 highlighting.
        ArrayList runs = new ArrayList();

        // 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))
        {
            runs.Add(currentNode);
            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);

            runs.Add(currentNode);
        }

        DocumentBuilder builder = new DocumentBuilder((Document)e.MatchNode.Document);
        builder.MoveTo((Run)runs[runs.Count - 1]);
        builder.InsertImage(@"D:\Temp\Aspose.Words.jpg");

        //Now remove all runs in the sequence.
        foreach (Run run in runs)
        {
            run.Remove();
        }

        return ReplaceAction.Skip;
    }
}
///////////////////////////////
Document doc = new Document(MyDir + @"in.docx");

FindReplaceOptions findReplaceOptions = new FindReplaceOptions(FindReplaceDirection.Backward);
findReplaceOptions.ReplacingCallback = new Replacer();

doc.Range.Replace(new Regex("@@"), "", findReplaceOptions);

doc.Save(MyDir + @"18.4.docx");