public void AddCash(int id, string studentName, int amount)
        {
            var Employee = Get(id);

            _context.Update(Employee);
            // Employee.Cash.Add(studentName, amount);
            _context.SaveChanges();
        }
        private void UpdateStatus(int itemId, string statusName)
        {
            var item = GetItem(itemId);

            _context.Update(item);

            var status = _context.Status.FirstOrDefault(s => s.Name == statusName);

            //todo: some nullchecks here

            item.Status = status;
        }