DatabaseContext db = new DatabaseContext();
        [HttpGet]
        public IEnumerable<News> Get()
        {
            db.Configuration.ProxyCreationEnabled = false;

            var lst = db.Newses.ToList();
            return lst;

        }

DatabaseContext db = new DatabaseContext();
        [HttpGet]
        public IEnumerable<News> Get()
        {
            db.Configuration.ProxyCreationEnabled = false;

            var lst = db.Newses.Include("Types").ToList();
            return lst;

        }

<httpProtocol>
      <customHeaders>
        <add name="Access-Control-Allow-Origin" value="*" />
        <add name="Access-Control-Allow-Headers" value="Content-Type" />
        <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
      </customHeaders>
</httpProtocol>

 [Authorize(Roles="Admin")]
        //[Authorize(Users="")]
        public Product GetProductById(int Id)
        {
            var product = Products.FirstOrDefault(p => p.Id == Id);
            if(product==null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound); 
            }
            return product; 
        }