Working with Document Events - Kentico 8.2

So the Document attachments save and delete events of a Document don't work for what you need? Check out that last link you posted and search the page for "SaveAttachment". I'd think on that event you can capture what you need and update the node referenced with the attachment.

I tried SaveAttachment and DeleteAttachment After events and they didn't do anything. They didn't even update the value after 2 saves, like Insert/Update Before.

Here's my code:

private void SaveAttachment_After(object sender, DocumentEventArgs e)
{
var doc = e.Node;

if (doc.Attachments.Count > 0) { doc.SetValue("HasAttachments", true); }
else { doc.SetValue("HasAttachments", false); }
}
}

Your initial post stated you noticed it didn't save anything to the attachments table until the document was published. Did you see if your code was fired when the document was published? Is your event initialized properly?