private async Task OnStartBackgroundWorker()
        {
            SetMsg(Printing.PrinterQueue, Printing.Message);
            if (!around.dialohHostPrinter.IsOpen)
            {
                around.dialohHostPrinter.IsOpen = true;
            }
            Printing.LaunchMonitor();
            await Task.Delay(500);

            PrinterChecking().RunAsync();
        }