title: Adding two dates to eachother
body: <pre><code>string final = Convert.ToString(DateTime.Parse(date, System.Globalization.CultureInfo.InvariantCulture) + TimeSpan.Parse(duration));
  </code></pre>
  
  <p>Hi, I use the above code to <strong>add two date's to eachother</strong>. It do work very well on Windows and returns the required format <code>yyyy-MM-dd HH:mm:ss</code> in a correct fashion. HOWEVER, when on Linux building with Mono it returns the following format <code>dd/MM/yyyy HH:mm:ss</code> which is not what I want.</p>
  
  <p>How can I specify that I ONLY want the first formatting and nothing else? I tried playing around with ParseExact but it did not do very well. What I've heard ParseExact should not really be needed for this?</p>
  
  <p><strong>Here is a example of input:</strong></p>
  
  <pre><code>string date = "2014-10-30 10:00:04"; // On windows
  
  string duration = "05:02:10"; // duration to be added to date
  </code></pre>
  
  <p>Greetings.</p>