title: change a number of days to date
body: <p>how can i  change a number of days to (year,month &amp; days) with DateTime class in C#
  .actually i want to calculate the exact date of birth with the birthday.
  ? years ?month .... ? seconds .</p>
  
  <p>my code:</p>
  
  <pre><code>DateTime a = new DateTime(1993, 6, 10, 0, 0, 0);
              DateTime now = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, DateTime.Now.Hour
                  ,DateTime.Now.Minute,DateTime.Now.Second);
              TimeSpan b = now - a;
              int c = b.Days;
  </code></pre>