title: Get the two first and last chars of a string C#
body: <p>Well I'd like to get the two first and last chars of a string. This is what I already got</p>
  <pre><code>public static string FirstLastChars(this string str)
  {
      return str.Substring(0,2);
  }
  </code></pre>
  <p>BTW. It's an extension method</p>