public IHttpActionResult PutAspNetUser(string id, AspNetUser aspNetUser)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

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

            if (db.Entry(aspNetUser).Entity.Id.ToLower().CompareTo(user.Id.ToLower()) != 0)
                return NotFound();

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

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

            return StatusCode(HttpStatusCode.NoContent);
        }
        public IHttpActionResult PostAspNetUser(AspNetUser aspNetUser)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.AspNetUsers.Add(aspNetUser);

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

            return CreatedAtRoute("DefaultApi", new { id = aspNetUser.Id }, aspNetUser);
        }