public IHttpActionResult PostPatient(Patient patient)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.Patient.Add(patient);

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

            return CreatedAtRoute("DefaultApi", new { id = patient.Id }, patient);
        }
        public IHttpActionResult PutPatient(int id, Patient patient)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

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

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

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

            return StatusCode(HttpStatusCode.NoContent);
        }