public IHttpActionResult PostOwnerInfo(OwnerInfo ownerInfo)
        {
            try
            {
                if (!ModelState.IsValid)
                {
                    return BadRequest(ModelState);
                }
                ownerInfo.RegistrationDate = DateTime.Now;

                db.OwnerInfoes.Add(ownerInfo);
                db.SaveChanges();
            }
            catch (DbEntityValidationException  e)
            {
               foreach (var eve in e.EntityValidationErrors)
    {
        Debug.WriteLine("Entity of type \"{0}\" in state \"{1}\" has the following validation errors:",
            eve.Entry.Entity.GetType().Name, eve.Entry.State);
        foreach (var ve in eve.ValidationErrors)
        {
            Debug.WriteLine("- Property: \"{0}\", Error: \"{1}\"",
                ve.PropertyName, ve.ErrorMessage);
        }
    }
    throw; 
                throw;
            }

            return CreatedAtRoute("DefaultApi", new { id = ownerInfo.OwnerId }, ownerInfo);
        }
        public IHttpActionResult PutOwnerInfo(int id, OwnerInfo ownerInfo)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (id != ownerInfo.OwnerId)
            {
                return BadRequest();
            }

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

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

            return StatusCode(HttpStatusCode.NoContent);
        }