public IHttpActionResult PutPersonInformation(int id, PersonInformation personInformation)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (id != personInformation.PersonId)
            {
                return BadRequest();
            }

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

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

            return StatusCode(HttpStatusCode.NoContent);
        }
        public IHttpActionResult PostPersonInformation(PersonInformation personInformation)
        {
            //var ReceivedDateYear = personInformation.BirthDate.Year;

            //var CurrentDateYear = DateTime.Now.Year;

            //var Age = CurrentDateYear - ReceivedDateYear;

            //personInformation.Age = Age;

            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.PersonInformations.Add(personInformation);
            db.SaveChanges();

            return CreatedAtRoute("DefaultApi", new { id = personInformation.PersonId }, personInformation);
        }