title: Converting DataTypes for Option Strict
body: <p>I was just wondering how to correctly </p>
  
  <ol>
  <li>Convert string to date</li>
  <li>Convert integer to short</li>
  <li>Convert string to integer</li>
  <li>Convert string to double</li>
  </ol>
  
  <p>correctly without using any Ctypes of any sort. I turned on Option Strict and now all these errors popped up so I'm trying to fix them :)</p>