CommentAccept Method
Accepts a visitor.

Namespace: Aspose.Words
Assembly: Aspose.Words (in Aspose.Words.dll) Version: 19.10
Syntax
public override bool Accept(
	DocumentVisitor visitor
)

Parameters

visitor
Type: Aspose.WordsDocumentVisitor
The visitor that will visit the nodes.

Return Value

Type: Boolean
True if all nodes were visited; false if DocumentVisitor stopped the operation before visiting all nodes.
Remarks

Enumerates over this node and all of its children. Each node calls a corresponding method on DocumentVisitor.

For more info see the Visitor design pattern.

Remarks
Calls VisitCommentStart(Comment), then calls Accept(DocumentVisitor) for all child nodes of the comment and calls VisitCommentEnd(Comment) at the end.
Examples
Shows how to create comments with replies and get all interested info.
[C#]

public void CreateCommentsAndPrintAllInfo()
{
    Document doc = new Document();
    doc.RemoveAllChildren();

    Section sect = (Section)doc.AppendChild(new Section(doc));
    Body body = (Body)sect.AppendChild(new Body(doc));

    // Create a commented text with several comment replies
    for (int i = 0; i <= 10; i++)
    {
        Comment newComment = CreateComment(doc, "VDeryushev", "VD", DateTime.Now, "My test comment " + i);

        Paragraph para = (Paragraph)body.AppendChild(new Paragraph(doc));
        para.AppendChild(new CommentRangeStart(doc, newComment.Id));
        para.AppendChild(new Run(doc, "Commented text " + i));
        para.AppendChild(new CommentRangeEnd(doc, newComment.Id));
        para.AppendChild(newComment);

        for (int y = 0; y <= 2; y++)
        {
            newComment.AddReply("John Doe", "JD", DateTime.Now, "New reply " + y);
        }
    }

    // Look at information of our comments
    PrintAllCommentInfo(ExtractComments(doc));
}

/// <summary>
/// Create a new comment
/// </summary>
public static Comment CreateComment(Document doc, string author, string initials, DateTime dateTime, string text)
{
    Comment newComment = new Comment(doc)
    {
        Author = author, Initial = initials, DateTime = dateTime
    };
    newComment.SetText(text);

    return newComment;
}

/// <summary>
/// Extract comments from the document without replies
/// </summary>
public static List<Comment> ExtractComments(Document doc)
{
    List<Comment> collectedComments = new List<Comment>();

    NodeCollection comments = doc.GetChildNodes(NodeType.Comment, true);

    foreach (Comment comment in comments)
    {
        // All replies have ancestor, so we will add this check
        if (comment.Ancestor == null)
        {
            collectedComments.Add(comment);
        }
    }

    return collectedComments;
}

/// <summary>
/// Use an iterator and a visitor to print info of every comment from within a document.
/// </summary>
private static void PrintAllCommentInfo(List<Comment> comments)
{
    // Create an object that inherits from the DocumentVisitor class
    CommentInfoPrinter commentVisitor = new CommentInfoPrinter();

    // Get the enumerator from the document's comment collection and iterate over the comments
    using (IEnumerator<Comment> enumerator = comments.GetEnumerator())
    {
        while (enumerator.MoveNext())
        {
            Comment currentComment = enumerator.Current;

            // Accept our DocumentVisitor it to print information about our comments
            if (currentComment != null)
            {
                // Get CommentRangeStart from our current comment and construct its information
                CommentRangeStart commentRangeStart = (CommentRangeStart)currentComment.PreviousSibling.PreviousSibling.PreviousSibling;
                commentRangeStart.Accept(commentVisitor);

                // Construct current comment information
                currentComment.Accept(commentVisitor);

                // Get CommentRangeEnd from our current comment and construct its information
                CommentRangeEnd commentRangeEnd = (CommentRangeEnd)currentComment.PreviousSibling;
                commentRangeEnd.Accept(commentVisitor);
            }
        }

        // Output of all information received
        Console.WriteLine(commentVisitor.GetText());
    }
}

/// <summary>
/// This Visitor implementation prints information about and contents of comments and comment ranges encountered in the document.
/// </summary>
public class CommentInfoPrinter : DocumentVisitor
{
    public CommentInfoPrinter()
    {
        mBuilder = new StringBuilder();
        mVisitorIsInsideComment = false;
    }

    /// <summary>
    /// Gets the plain text of the document that was accumulated by the visitor.
    /// </summary>
    public string GetText()
    {
        return mBuilder.ToString();
    }

    /// <summary>
    /// Called when a Run node is encountered in the document.
    /// </summary>
    public override VisitorAction VisitRun(Run run)
    {
        if (mVisitorIsInsideComment) IndentAndAppendLine("[Run] \"" + run.Text + "\"");

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a CommentRangeStart node is encountered in the document.
    /// </summary>
    public override VisitorAction VisitCommentRangeStart(CommentRangeStart commentRangeStart)
    {
        IndentAndAppendLine("[Comment range start] ID: " + commentRangeStart.Id);
        mDocTraversalDepth++;
        mVisitorIsInsideComment = true;

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a CommentRangeEnd node is encountered in the document.
    /// </summary>
    public override VisitorAction VisitCommentRangeEnd(CommentRangeEnd commentRangeEnd)
    {
        mDocTraversalDepth--;
        IndentAndAppendLine("[Comment range end] ID: " + commentRangeEnd.Id + "\n");
        mVisitorIsInsideComment = false;

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when a Comment node is encountered in the document.
    /// </summary>
    public override VisitorAction VisitCommentStart(Comment comment)
    {
        IndentAndAppendLine(string.Format("[Comment start] For comment range ID {0}, By {1} on {2}", comment.Id,
            comment.Author, comment.DateTime));
        mDocTraversalDepth++;
        mVisitorIsInsideComment = true;

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Called when the visiting of a Comment node is ended in the document.
    /// </summary>
    public override VisitorAction VisitCommentEnd(Comment comment)
    {
        mDocTraversalDepth--;
        IndentAndAppendLine("[Comment end]");
        mVisitorIsInsideComment = false;

        return VisitorAction.Continue;
    }

    /// <summary>
    /// Append a line to the StringBuilder and indent it depending on how deep the visitor is into the document tree.
    /// </summary>
    /// <param name="text"></param>
    private void IndentAndAppendLine(string text)
    {
        for (int i = 0; i < mDocTraversalDepth; i++)
        {
            mBuilder.Append("|  ");
        }

        mBuilder.AppendLine(text);
    }

    private bool mVisitorIsInsideComment;
    private int mDocTraversalDepth;
    private readonly StringBuilder mBuilder;
}
See Also