Reply to a topic in Discussion board List using CSOM

Question

I am working with a Discussion board list. I need to create the whole list using CSOM from scratch. To which I was able to make the list and topic inside it as folders. But I am not able to add replies to those topics. If I add replies as ListItem it shows as Topic inside the topic.

I wanted to know how to add replies to topics and also how to add replies to replies.

Answer 1

You should be able to achieve your goal with Microsoft.SharePoint.Client.Utilities.Utility.CreateNewDiscussionReply method.

public static ListItem CreateNewDiscussionReply(
    ClientRuntimeContext context,
    ListItem parent
)

For reply to topic provide topic ListItem as a parameter and for reply to reply provide original reply ListItem as a parameter.

Example

 var replyItem = Microsoft.SharePoint.Client.Utilities.Utility.CreateNewDiscussionReply(ctx, topicItem);

 replyItem["Title"] = "Test Reply";
 replyItem["Body"] = "Test body Content";
 replyItem.Update();
 ctx.ExecuteQuery();