Age in years with decimal precision given a datetime

Question

How can I get the age of someone given the date of birth in a C# datetime.

I want a precise age like 40.69 years old

Answer 1

An approximite would be:

        DateTime bd = new DateTime(1999, 1, 2);

        TimeSpan age = DateTime.Now.Subtract(bd);
        Console.WriteLine(age.TotalDays / 365.25);