dictionary does not contain a definition for contains : <p>I have such code</p>

<pre><code>Dictionary&lt;string, Object&gt; dollarSignConvertedVals = TryToConvertAllDollarSigns(TryToConvertAllEnvVar(values));
</code></pre>

<p>When I am trying to find out if there contains a value by key like this</p>

<pre><code>if (!dollarSignConvertedVals.Contains(JSON_KEYS.CONNECTION_CONFIG)){}
</code></pre>

<p>I am getting such weird issue</p>

<blockquote>
  <p>Dictionary does not contain a fedination for Contains and the best extension method overload Queryalbe.Contais(IQuerable, string) requeres of type IQueryable</p>
</blockquote>

<p><a href="https://i.stack.imgur.com/7WIDo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7WIDo.png" alt="enter image description here"></a></p>

<p>What is the problem here?</p>
