public IHttpActionResult PostPaymentType(PaymentType paymentType)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.PaymentType.Add(paymentType);

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateException)
            {
                if (PaymentTypeExists(paymentType.Id))
                {
                    return Conflict();
                }
                else
                {
                    throw;
                }
            }

            return CreatedAtRoute("DefaultApi", new { id = paymentType.Id }, paymentType);
        }
        public IHttpActionResult PutPaymentType(int id, PaymentType paymentType)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (id != paymentType.Id)
            {
                return BadRequest();
            }

            db.Entry(paymentType).State = EntityState.Modified;

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!PaymentTypeExists(id))
                {
                    return NotFound();
                }
                else
                {
                    throw;
                }
            }

            return StatusCode(HttpStatusCode.NoContent);
        }