I can not remember the exact syntax for what I want to do, but I am sure this is used all over the place.
Considder the code:

try
{
  // some code
  IPEndPoint ipEP = new IPEndPoint(paraIPAddress, iPort);
  Socket udpSocket = new Socket(ipEP.Address.AddressFamily,SocketType.Dgram,ProtocolType.Udp);
  // some more code
}
catch(Exception ex)
{
  //Do something if exception is thrown
}
finally
{
  //I need some code here to test if the socket is created/initialized
  udpSocket.Close();
}

The contents of the code is not really important, but what can I use in the finally block to ensure that the object that I am trying to call the "clean-up" code for (in this case Close()) has been initialized? What if an error was thrown before the line Socket udpSocket = new Socket(...), I want to call Close() on the udpSocket in the finally block but only if the object udpSocket is defined.

Thanks,
Einar