title: Problem with SerialPort
body: <p>I'm working with SerialPort to communicate (read only) with barcode reader. </p>
  
  <p>I've installed driver to operate with the reader as if it was connected via Com-port, though it is a usb device. When the device is plugged, one more Com-port appears in the list. </p>
  
  <p>The problem is the following. I initialize the SerialPort object to read from barcode reader, but if the reader is unplugged, I have no way to finalize or dispose the SerialPort object correctly, because the port it is "attached" to no longer exists. </p>
  
  <p>The result is WinIOException when the program is closed. I cannot catch it not only in the code working with the SerialPort but at the program.cs level as well. According to the stack WinIOException is thrown after the attempts of finalizing and disposing the SerialPort object.</p>
  
  <p>Are there any ideas how I can operate with this situation properly? Or at least to catch the exception?</p>
  
  <p>The thing I know for sure is that the problem is not in this particular driver; I had one more barcode reader from another manufacturer (with the same purpose driver) - the situation is the same.</p>