public bool Edit(RemarkW remark)
        {
            var r = db.Remarks.Find(remark.Id);
            r.Text = remark.Text;
            db.SaveChanges();

            return true;
        }
        public bool Create(RemarkW remark)
        {
            remark.Id = Guid.NewGuid();
            db.Remarks.Add(remark.ToBase());
            db.SaveChanges();

            return true;
        }