public static void AddCommentOnFirstParagraph(string fileName,
string author, string initials, string comment)
{
// Use the file name and path passed in as an
// argument to open an existing Wordprocessing document.
using (WordprocessingDocument document =
WordprocessingDocument.Open(fileName, true))
{
// Locate the first paragraph in the document.
Paragraph firstParagraph =
document.MainDocumentPart.Document.Descendants<Paragraph>().First();
Comments comments = null;
string id = "0";
// Verify that the document contains a
// WordProcessingCommentsPart part; if not, add a new one.
if (document.MainDocumentPart.GetPartsCountOfType<WordprocessingCommentsPart>() > 0)
{
comments =
document.MainDocumentPart.WordprocessingCommentsPart.Comments;
if (comments.HasChildren)
{
// Obtain an unused ID.
id = comments.Descendants<Comment>().Select(e => e.Id.Value).Max();
}
}
else
{
// No WordprocessingCommentsPart part exists, so add one to the package.
WordprocessingCommentsPart commentPart =
document.MainDocumentPart.AddNewPart<WordprocessingCommentsPart>();
commentPart.Comments = new Comments();
comments = commentPart.Comments;
}
// Compose a new Comment and add it to the Comments part.
Paragraph p = new Paragraph(new Run(new Text(comment)));
Comment cmt =
new Comment()
{
Id = id,
Author = author,
Initials = initials,
Date = DateTime.Now
};
cmt.AppendChild(p);
comments.AppendChild(cmt);
comments.Save();
// Specify the text range for the Comment.
// Insert the new CommentRangeStart before the first run of paragraph.
firstParagraph.InsertBefore(new CommentRangeStart() { Id = id }, firstParagraph.GetFirstChild<Run>());
// Insert the new CommentRangeEnd after last run of paragraph.
var cmtEnd = firstParagraph.InsertAfter(new CommentRangeEnd() { Id = id }, firstParagraph.Elements<Run>().Last());
// Compose a run with CommentReference and insert it.
firstParagraph.InsertAfter(new Run(new CommentReference() { Id = id }), cmtEnd);
}
}
}