public async Task <IHttpActionResult> Delete(CustomerInfo customer)
        {
            try
            {
                var c = _repo.GetCustomerWithAddressByCustomerId(customer.CustomerInfoId);
                if (c == null)
                {
                    return(NotFound());
                }

                _repo.DeleteCustomer(customer);
                if (await _repo.SaveChangesAsync())
                {
                    return(Ok());
                }
                else
                {
                    return(InternalServerError());
                }
            }
            catch (Exception ex)
            {
                return(InternalServerError(ex));
            }
        }