title: Do nothing keyword in C#?
body: <p>Is there a keyword to 'do nothing' in C#?</p>
  
  <p>For example I want to use a ternary operator where one of the actions is to take no action:</p>
  
  <pre><code>officeDict.ContainsKey("0") ? DO NOTHING : officeDict.Add("0","")
  </code></pre>