title: convert date mm/dd/yyyy to yyyy-mm-dd date itself in the format
body: <p>I am trying not to format <code>ToString()</code>. I need the date itself in the format.i cannot do to string
  scenario:</p>
  
  <pre><code>string str = "02/11/2006";
  DateTime dt = new DateTime();
  dt = Convert.ToDateTime(str);
  </code></pre>
  
  <p>now <strong><code>dt</code></strong> is in the format <code>mm/dd/yyyy</code>, but i need in the format <code>yyyy-mm-dd</code>
  hope i add some sense..huh!</p>