title: Retrieving year and month in YYYYMM format using datetime.now
body: <p>I need year and month of date in YYYYMM format.
  I am trying to use </p>
  
  <pre><code>string yrmm = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString();
  </code></pre>
  
  <p>But this returns '20114' instead of '201104'. Any easy way to fix this?</p>