public void OrderRemove(int id)
        {
            using (var ctx = new TestDatabaseEntities())
            {
                Order res = ctx.Orders.Where(o => o.id == id).First();

                ctx.Entry(res).State = EntityState.Deleted;
                ctx.SaveChanges();
            }
        }
        public bool OrderUpdate(Order o)
        {
            using (var ctx = new TestDatabaseEntities())
            {
                Order ordUpdate =
                    ctx.Orders.Where(or => or.id == o.id).First();
                if (ordUpdate != null)
                {
                    ordUpdate.Price = o.Price;
                    ordUpdate.Description = o.Description;
                }
                else
                {
                    return false;
                }
                ctx.Entry(ordUpdate).State = EntityState.Modified;
                ctx.SaveChanges();

            }
            return true;
        }
        public bool Update(Worker item)
        {
            using (var ctx = new TestDatabaseEntities())
            {
                Worker wrkUpdate =
                    ctx.Workers.Where(w => w.id == item.id).First();
                if (wrkUpdate != null)
                {
                    wrkUpdate.FirstName = item.FirstName;
                    wrkUpdate.LastName = item.LastName;
                    wrkUpdate.Position = item.Position;
                    wrkUpdate.Phone = item.Phone;
                }
                else
                {
                    return false;
                }
                ctx.Entry(wrkUpdate).State = EntityState.Modified;
                ctx.SaveChanges();

            }
            return true;
        }