private void Button_Click_1(object sender, RoutedEventArgs e)
 {
     str_bt.IsEnabled = true;
     comport.Close();//закрыть порт
     comport.DataReceived -= new SerialDataReceivedEventHandler(port_DataReceived);
     lock (KEY_lock)
     {
         KEY_lock = "0";
     }
     ClassTextFile.CloseFileData();
 }