title: .Net: DateTime String format
body: <p>I'm trying to add a timestamp to a file. However the <code>DateTime</code> Format <code>ToString()</code> looks weird to me.</p>
  
  <p>Here is my code:</p>
  
  <pre><code>Dim _timeStamp As String = Date.Now.ToString("dd_mm_yyyy")
  </code></pre>
  
  <p>but the value looks like this: </p>
  
  <blockquote>
    <p><code>_timeStamp = "03_24_2009"</code></p>
  </blockquote>
  
  <p>I checked my PC and the current date is correct. Shouldn't the value look like this: <code>03_03_2009</code>? </p>