private async void declineRequest(object Sender, RoutedEventArgs e) { string id_daftar_kontak = (Sender as Button).Tag.ToString(); string responseData = await httpObject.DeleteRequest("user/declineContactRequest/" + id_daftar_kontak,session.getTokenAuthorization()); JObject json = JObject.Parse(responseData); if (json["status"].ToString() == "1") { updateListContact(); updateListPendingContactRequest(); } }