Calculate DOB in Years,Month and Days

Write a static function like below and call it inside any function:-

public static string DateDiff(DateTime dt1, DateTime dt2)
{
   TimeSpan t1 = dt2 - dt1;
   Decimal d1 = Convert.ToDecimal(t1.TotalDays) / 365.25M;
   Decimal d2 = Decimal.Floor(d1);
   Decimal m1 = (d1 - d2) * 12;
   Decimal m2 = Decimal.Floor(m1);
   Decimal day1 = (m1 - m2) * 24;
   Decimal day2 = Decimal.Floor(day1);

   return String.Format("{0} Years {1} Months {2} Days ", d2, m2, day2);
}

Now,Call it like below:-

DateTime dt1 = new DateTime(1984,10,15);
DateTime dt2 = DateTime.Today;

Response.Write(DateDiff(dt1, dt2));