title: Input string was not in a correct format. in timespan
body: <pre><code>TimeSpan newEventStartTime = TimeSpan.ParseExact(Start_Time, "HH:mm", CultureInfo.InvariantCulture);
  </code></pre>
  
  <p>when this line of code execute ,it make an error Input string was not in a correct format.
  and the variable Start_Time data type is string in c# and it's data type in java script is time.</p>