title: How convert TimeSpan to 24 hours and minutes String?
body: <p>I use this code for converting <code>Timespan</code> to <code>String</code> (for ex: 14:53) :</p>
  
  <pre><code>myTimeSpan.ToString("hh:mm");
  </code></pre>
  
  <p>but this error occurs:</p>
  
  <blockquote>
    <p>Input string was not in a correct format</p>
  </blockquote>
  
  <p>What is the proper way to do this?</p>