I understand that you can access comments in an append-only field like:

    public string retrieveComments(SPListItem item)
        SPListItemVersionCollection versions = item.Versions;
        string latestComment = "";

            foreach (SPListItemVersion itemVersion in versions)
                if (itemVersion.IsCurrentVersion)
                    latestComment = itemVersion["Comments"].ToString().Trim();

        catch (Exception e3)
            //handles exception

        return latestComment;

Is there any way to create a new version of the list item and append a comment as the latest comment through C#?

My goal is for someone to email the list and take the body of their email and append it as a comment.


3 Answers 3


You don't need to go through the Versions to get the latest value. That's the current value:


To add a new comment just update the item:

item["Comments"] = "This is now the latest comment";
  • Wow. I honestly thought I tried this already. Thanks so much. Would up-vote but I don't have enough rep!
    – cbrad
    Jul 30, 2012 at 18:19
  • Is there a way to add an image attachment as a comment if the user say, sends a screenshot?
    – cbrad
    Jul 30, 2012 at 18:20
  • Handled it for you, cbrad. Jul 30, 2012 at 18:20
  • Thanks rjcup3, easy answer apparently, but well deserved. Been stuck on this for awhile.
    – cbrad
    Jul 30, 2012 at 18:23
  • 1
    You can add the image as a standard attachment and then in the comments field have an <img> element pointing to it like: item["Comments"]="Comment with image: <img src='/Lists/TestList/Attachments/2/Test.png' />. Nice";. In this case it's item with ID and the Attachment is named "Test.png" Jul 30, 2012 at 18:29

Here is an example:

 List<Message> msgs = new List<Message>
                new Message{Comments=new List<string>{"AS"},IsCurrent=false},
                new Message{Comments=new List<string>{"ASfff"},IsCurrent=true},

            var ress = msgs.Where(ms => ms.IsCurrent); 

            foreach (var ms in ress)
  • I could be wrong but doesn't that just get the latest comment? I want to be able to append a comment as the latest comment.
    – cbrad
    Jul 27, 2012 at 22:42
  • Means if the comment is IsCurrentVersion then what you wana do ?
    – Praveen
    Jul 27, 2012 at 22:43
  • I want to add a comment, not retrieve them.
    – cbrad
    Jul 27, 2012 at 22:45
  • Sorry for late reply, I will give this a try today, thanks.
    – cbrad
    Jul 30, 2012 at 15:12
  • How would I go about creating the Message class?
    – cbrad
    Jul 30, 2012 at 16:09

Posted this on sharepoint.stackexchange.com

The answer is simple (which makes me look stupid), and I'm pretty sure I tried it before with no avail, but here it is:

Can you add comments to an append-only field in a list in Sharepoint 2010 using C#?

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