title: hidden field vs viewstate
body: <p>What is the difference when using</p>
  
  <ul>
  <li>Hidden field vs View state?</li>
  <li>When to use each one ?</li>
  <li>Which one more secure? </li>
  <li>Which is better in performance?</li>
  <li>what are the alternatives?</li>
  </ul>