public void Post([FromBody] Models.MemorizeUnit Record)
        {
            try
            {
                Record.CreationDate = DateTime.Now;

                _context.MemorizeUnits.Add(Record);

                _context.SaveChanges();
            }

            catch (DbUpdateException)
            {
                throw;
            }
        }
        public void Put(Models.MemorizeUnit NewRec)
        {
            try
            {
                List <Schedule> ToDel = _context.Schedule.Where(x => x.Unit.Id == NewRec.Id).ToList();

                _context.Schedule.RemoveRange(ToDel);

                _context.SaveChanges();


                _context.Schedule.AddRange(NewRec.Schedules);

                _context.MemorizeUnits.Attach(NewRec);
                _context.Entry(NewRec).State = EntityState.Modified;
                _context.SaveChanges();
            }
            catch (Exception e)
            {
            }
        }