CRM 2011-Not Varlığına Önceden Eklenmiş Dosyayı Silme (Delete Attachment From Annotation)

public static void DeleteAttachmentFromNote(Guid noteId, IOrganizationService service)
        {
            Annotation note = new Annotation();
            note.Id = noteId;

            // Set the Documentbody and other fields to null to remove the attachment
            note.DocumentBody = null;

            note.FileName = null;
            note.IsDocument = false;
            service.Update(note);
        }