private async void _Load() { List <User_DTO> listuser = new List <User_DTO>(); listuser = await RestAPI.GetAccount(); listaccount = listuser; foreach (User_DTO temp in listuser) { if (temp.is_block) { temp.block = "Check"; } else { temp.block = "Block"; } } list_user.ItemsSource = listuser; progress_bar.Visibility = Visibility.Collapsed; }