C# .Any() used to check for an already existing element on a single dimensional list
<p>I'm seeing a lot of examples of .Any() used with custom defined lists. I have a list that only contains values and no keys. How can I make use of Any() with a single dimensional list. </p>

<p>Here's how far I have gotten already:</p>

<pre><code>            List&lt;string&gt; thread_pause = null;
            if (thread_pause.Any(item =&gt; item == project_id)&amp;&amp;thread_pause!=null) 
            {
                show("Already In List!");
            }
            else
            {
                show(project_id);
                session.thread_pause.Insert(0, project_id);
            }
</code></pre>

<p>I appreciate any help on this.</p>
