title: Convert Time of day in string format to c# timespan
body: <p>I have a value like <code>3:30pm</code> as a javascript string.</p>
  
  <p>I have an MVC controller which takes a parameter which is a <code>TimeSpan</code>.</p>
  
  <p>I make a jquery post to the controller. How do I get the time from string format into the <code>TimeSpan</code> format?</p>