public void _serieport_NewSerialDataReceived(object sender, SerialDataEventArgs e)
        {
            try
            {
                Dispatcher.Invoke(() =>
                {
                    txtData.AppendText(Encoding.ASCII.GetString(e.Data));
                    txtData.ScrollToEnd();
                });
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }