Calculate Age

Posted on September 18, 2013October 26, 2015 By David Kittell

public static Int32 GetAge(this DateTime dateOfBirth)
{
    var today = DateTime.Today;

    var a = (today.Year * 100 + today.Month) * 100 + today.Day;
    var b = (dateOfBirth.Year * 100 + dateOfBirth.Month) * 100 + dateOfBirth.Day;

    return (a - b) / 10000;
}

var now = float.Parse(DateTime.Now.ToString("yyyy.MMdd"));
var dob = float.Parse(dateOfBirth.ToString("yyyy.MMdd"));
var age = (int)(now - dob);

Source: http://stackoverflow.com/questions/9/how-do-i-calculate-someones-age-in-c

Originally Posted on September 18, 2013
Last Updated on October 26, 2015

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