public class SimuController : ApiController    {             //EF 5        BIM_GENERALDICTONARY_DBEntities entities=new BIM_GENERALDICTONARY_DBEntities();                 // GET api/Simu        public IEnumerable<T_BIM_PropityClass> Get()        {            return entities.T_BIM_PropityClass;        }    }

     static readonly Uri _baseAddress = new Uri("http://localhost:5373/");        static readonly Uri _address = new Uri(_baseAddress, "/api/simu");        private void button1_Click(object sender, EventArgs e)        {            WebClient webClient = new WebClient();            webClient.Headers["Accept"] = "application/json";            webClient.Encoding = Encoding.UTF8;webClient.DownloadStringCompleted += (send, es) =>                {                 if (es.Result != null)                 {                     var test = JsonConvert.DeserializeObject<T_BIM_PropityClass[]>(es.Result);                     if (test.Any())                     {                         gridControl1.DataSource = test;}                 }                 else                 {                     MessageBox.Show(es.Error.Message);                 }                };            webClient.DownloadStringAsync(_address);        }