title: How to pull the key value based on the key that is inside the Dictionary?
body: <p>Let's say I did the following: </p>
  
  <pre><code>Dictionary&lt;string,NetworkStream&gt; dictionary = new Dictionary&lt;string,NetworkStream&gt;();
  dictionary.add("Matt",network);
  dictionary.add("Mike",network);
  dictionary.add("Jack",network);
  </code></pre>
  
  <p>How do I pull the <code>Networkstream</code> of Jack? Assuming I have multiple of lines likes this.</p>
  
  <p>UPDATE: I didn't explain myself well, sorry. If the name is already exists I'm not going to add him to the dictionary.. I meant if I have different names.</p>