How to put the options A B C D down the each line

Aspose.Words Product Family
1

I have a question:
In this document, I have many options A B C D, but they don’t on the each line
I want to put the options A B C D down the each line with C# program using Aspose Word
Source file: 000V2_test.docx (29.7 KB)
Result what I want: 000V2_test_result.docx (30.2 KB)
Thank you !

2

@quanghieumylo You can use Find/Replace functionality and regular expression to achieve this. For example see the following code:

Document doc = new Document(@"C:\Temp\in.docx");
FindReplaceOptions opt = new FindReplaceOptions();
opt.UseSubstitutions = true;
doc.Range.Replace(new Regex(@"\s+([A-Z]\.)"), "&p$1", opt);
doc.Save(@"C:\Temp\out.docx");
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3

Thank you, @alexey.noskov. You a help me a lot.
When I use your code, it appears empty lines.
Please help me, how to remove empty lines?

4

@quanghieumylo You can modify code like the following to remove empty paragraphs from the document:

Document doc = new Document(@"C:\Temp\in.docx");

FindReplaceOptions opt = new FindReplaceOptions();
opt.UseSubstitutions = true;
doc.Range.Replace(new Regex(@"\s+([A-Z]\.)"), "&p$1", opt);

// Remove empty paragraphs
doc.GetChildNodes(NodeType.Paragraph, true).Cast<Paragraph>().Where(p => !p.HasChildNodes)
    .ToList().ForEach(p => p.Remove());

doc.Save(@"C:\Temp\out.docx");
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5

Thank a lot :heart_eyes:

1 Like
6

Excuse me, but in the above code, the replacement A B C D part has lost formatting (color, underline, bold…).
How can I keep this format of the letters A B C D?
Thank!

7

@quanghieumylo You can use IReplacingCallback to implement custom logic when perform replace operation. Please try using the following code:

Document doc = new Document(@"C:\Temp\in.docx");

FindReplaceOptions opt = new FindReplaceOptions();
opt.ReplacingCallback = new ReplaceEvaluatorFindAndInsertparagraphBreak();
doc.Range.Replace(new Regex(@"\s+([A-Z]\.)"), "", opt);

doc.Save(@"C:\Temp\out.docx");

internal class ReplaceEvaluatorFindAndInsertparagraphBreak : 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)
        {
            runs.Add((Run)currentNode);
            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((Run)currentNode);
        }

        // Create DocumentBuilder to insert an image.
        DocumentBuilder builder = new DocumentBuilder(doc);

        // Get the Run with label.
        Run targetRun = null;
        foreach (Run run in runs)
        {
            // Remove runs with whitespaced before list label.
            if (String.IsNullOrEmpty(run.Text.Trim()) && run.ParentNode.FirstChild == run)
                run.Remove();

            if (Regex.IsMatch(run.Text.Trim(), @"^(\s+)?[A-Z]"))
            {
                targetRun = run;
                targetRun.Text = targetRun.Text.TrimStart();
                break;
            }
        }

        // Move builder to the first run.
        builder.MoveTo(targetRun);
        // do not insert paragraph break if the run is the first node in paragraph.
        if (targetRun.ParentNode.FirstChild != targetRun)
            builder.Writeln();

        // 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;
    }
}
1 Like
8

Thank bro! It is perfect

1 Like
9

Sorry man, I used your code for this document, but something is wrong.
Cau 1_sua2.docx (13.8 KB)

image.png (35.2 KB)
Help me, please. Thanks!

10

@quanghieumylo Please try using FindReplaceDirection.Backward instead of default forward direction:

FindReplaceOptions opt = new FindReplaceOptions();
opt.Direction = FindReplaceDirection.Backward;
opt.ReplacingCallback = new ReplaceEvaluatorFindAndInsertparagraphBreak();
1 Like