public IHttpActionResult Delete(int id)
        {
            if (id < 0)
            {
                return(BadRequest("Not a valid Product Id"));
            }

            using (var ctx = new EmployeeDBEntities_Sale())
            {
                var sale = ctx.Sales.FirstOrDefault(s => s.SaleId == id);

                ctx.Entry(sale).State = System.Data.Entity.EntityState.Deleted;
                ctx.SaveChanges();
            }

            return(Ok());
        }