title: Age in years from DateTime (Date of birth)
body: <h3>Duplicate</h3>
  <blockquote>
  <p><a href="https://stackoverflow.com/questions/9/how-do-i-calculate-someones-age-in-c">How Can I calculate Someone's Age in C#?</a></p>
  </blockquote>
  <p>I have a <code>datetime</code> variable that represents the date of birth of a user.</p>
  <p>How can I get the age in years from this?</p>
  <p><b>Update</b>
  I want a precise birthday, so 30.45 years or something.</p>