public IHttpActionResult Get(int id)
        {
            IHttpActionResult ret;
            PTCViewModel      vm = new PTCViewModel();

            vm.Get(id);
            if (vm.Entity != null)
            {
                ret = Ok(vm.Entity);
            }
            else if (vm.LastException != null)
            {
                ret = BadRequest(vm.Message);
            }
            else
            {
                ret = NotFound();
            }
            return(ret);
        }
        public IHttpActionResult Get()
        {
            IHttpActionResult ret;
            PTCViewModel      vm = new PTCViewModel();

            //throw new ApplicationException("Error"); to check error

            vm.Get();
            if (vm.Products.Count() > 0)
            {
                ret = Ok(vm.Products);
            }
            else if (vm.LastException != null)
            {
                ret = BadRequest(vm.Message);
            }
            else
            {
                ret = NotFound();
            }
            return(ret);
        }