Catch block without arg
<p>I have a catch block like below:</p>

<pre><code>catch (Exception e)
            {
                connection.Close();
                return null;
            }
</code></pre>

<p>I get a warning saying 'e' is not being used. I don't want to use it. But if I remove it I get an error saying "class type expected". What's to be done?</p>
