title: How to parse datetime by ::parseexact in PowerShell?
body: <p>I'v got a problem when trying to parse, and convert string to [DateTime] format in PowerShell using <code>::parseexact</code>. Can someone tell me where's my bad?
  Here's my code.</p>
  
  <pre><code>[datetime]::parseexact('2018-05-07T15:19:17.839+03:00','o', 'yyyy-MM-ddTHH:mm:ss.fffzzz')
  </code></pre>
  
  <p>And here's an error </p>
  
  <blockquote>
    <p>Cannot find an overload for "parseexact" and the argument count: "3".
    At line:1 char:1
    + [datetime]::parseexact('2018-05-07T15:19:17.839+03:00','o', 'yyyy-MM- ...
    + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        + CategoryInfo          : NotSpecified: (:) [], MethodException
        + FullyQualifiedErrorId : MethodCountCouldNotFindBest</p>
  </blockquote>