title: Compare nullable datetime objects
body: <p>I have two nullable datetime objects, I want to compare both. What is the best way to do it?</p>
  
  <p>I have already tried:</p>
  
  <pre><code>DateTime.Compare(birthDate, hireDate);
  </code></pre>
  
  <p>This is giving an error, maybe it is expecting dates of type <code>System.DateTime</code> and I have Nullable datetimes.</p>
  
  <p>I have also tried:</p>
  
  <pre><code>birthDate &gt; hiredate...
  </code></pre>
  
  <p>But the results are not as expected...any suggestions?</p>