title: Parse TimeSpan 1:00 and 01:00
body: <p>i want to Parse a String of Hours for Example:
  16:40, 01:00, 12:00, 1:00, 4:90</p>
  <p>my Parsing way :</p>
  <pre><code>txtManDezStunden.Text = TimeSpan.ParseExact(txtManStunden.Text, &quot;hh':'mm&quot;, null).TotalHours.ToString(&quot;0.00&quot;);
  </code></pre>
  <p>Everything works fine if the Input of txtManStunden.Text is 01:00
  It &quot;fails&quot; when the Input is 1:00 which is a behavior i would like to catch.</p>
  <p>Is there a way to still parse even if the Operator uses &quot;01:00, 001:00, 1:00&quot; as an input</p>
  <p>Thanks for any recommendations</p>