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();
     }
 }