title: ASP.NET "String was not recognized as a valid DateTime."
body: <p>First off, I realize there's a million pages discussing this already. I have looked at least a hundred of them but cannot seem to make this work. My date and time is presented as a string, compiled from javascript to grab client's local time. It is formatted like this: 7/11/2015 8:34 PM. 
  I currently have:</p>
  
  <pre><code>Dim datetimeformated = DateTime.ParseExact(lblDateTime.Text, "MM/dd/yyyy HH:mm tt", CultureInfo.InvariantCulture)
  </code></pre>
  
  <p>I have tried many different variants, but this should be correct I think, yet it does not work. Any help is greatly appreciated. TIA</p>