HttpClient
var httpClient = new HttpClient(); var url = new Uri("http://localhost:57679/api/Technology/All"); var response = httpClient.GetAsync(url).Result; if(response.StatusCode == System.Net.HttpStatusCode.OK) { } var data = response.Content.ReadAsStringAsync().Result; textBox1.Text = data; var list = Newtonsoft.Json.JsonConvert.DeserializeObject<List<Technology>>(data); gridControl1.DataSource = list;