title: Convert.ToDateTime: how to set format
body: <p>I use convert like:</p>
  
  <pre><code>Convert.ToDateTime(value)
  </code></pre>
  
  <p>but i need convert date to format like "mm/yy".<br>
  I'm looking for something like this:</p>
  
  <pre><code>var format = "mm/yy";
  Convert.ToDateTime(value, format)
  </code></pre>