public IHttpActionResult PutUser(int id, User user)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

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

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

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

            return(StatusCode(HttpStatusCode.NoContent));
        }
        public void CreateCalculation(Calculation calculation)
        {
            var repo = new CalculatorEntities();

            if (repo.Calculations.Any())
            {
                calculation.CalculationId = repo.Calculations.Max(c => c.CalculationId) + 1;
                repo.Calculations.Add(calculation);

                repo.SaveChanges();
            }
            else
            {
                calculation.CalculationId = 1;
                repo.Calculations.Add(calculation);
                repo.SaveChanges();
            }
        }
        public void SaveCalculatedValue(string functionName, string total)
        {
            // insert into database using EF
            using (var db = new CalculatorEntities())
            {
                db.SimpleCalculatorResults.Add(
                    new SimpleCalculatorResult
                {
                    FunctionName  = functionName,
                    FunctionTotal = total,
                    CreatedOn     = DateTime.Now
                });

                db.SaveChanges();
            }
        }