private void RefreshWlanList() { var wlanInfoItems = WlanService.GetAllWlanList(); WlanInfoItems = wlanInfoItems.OrderByDescending(i => i.IsConnected).ThenByDescending(i => i.SignalQuality).ToList(); NoWlanTextBlock.Visibility = wlanInfoItems.Count == 0 ? Visibility.Visible : Visibility.Collapsed; }