title: Cast String to TimeSpan
body: <p>I tried to parse string to TimeSpan like the following :</p>
  
  <pre><code>    Dim dt As DateTime = DateTime.Now
      Dim timeCheckin As String = Format(dt, "HH:MM:FF")
      ts = TimeSpan.Parse(timeCheckin)
  </code></pre>
  
  <p>It threw error like this:</p>
  
  <blockquote>
    <p>System.OverflowException: The TimeSpan could not be parsed because at least one of the hours, minutes, or seconds components is outside its valid range.</p>
  </blockquote>
  
  <p>Can anyone give me a suggestion? Thank you.</p>