Get dictionary key if value contains string
<p>I have this Dictionary:</p>

<pre><code>    static Dictionary&lt;int, string&gt; Players = new Dictionary&lt;int, string&gt;();
    dictionary.Add(1, "Chris [GC]");
    dictionary.Add(2, "John");
    dictionary.Add(3, "Paul");
    dictionary.Add(4, "Daniel [GC]");
</code></pre>

<p>I want to get the key of values that contains "[GC]"</p>

<p>Any idea how?</p>

<p>Thanks.</p>