title: Shorthand for single item to collection c#
body: <p>I have a lot of code that takes on the following pattern</p>
  
  <pre><code>void Add(int foo)
  {
   $my question
  }
  
  void Add(List&lt;int&gt; bar)
  {
  //do stuff
  }
  </code></pre>
  
  <p>I was wondering (other than writing an extension method) if there was something 'shorter than writing:</p>
  
  <p><code>Add(new List&lt;int&gt;(new int[]{foo}));</code> </p>
  
  <p>everytime I wanted to call the second method. Hoping to find a gem ive missed in the .net library.</p>