CODEWITHSUNDEEP
c#.net
Jonathan Allen
Jonathan Allen

Reputation: 70337

How do I calculate a person's age in months/years?

How do I calculate a person's age in months/years such that anyone under two years old is reported in months and 2+ years in years only?

Upvotes: 1

Views: 736

Answers (4)

Brad
Brad

Reputation: 12253

private string Birthdate(DateTime birthday)
{
    var birthdayTicks = birthday.Ticks;
    var twoYearsTicks = birthday.AddYears(2).Ticks;
    var NowTicks = DateTime.Now.Ticks;

    var moreThanTwoYearsOld = twoYearsTicks < NowTicks;

    var age = new DateTime(DateTime.Now.Subtract(birthday).Ticks);

    return moreThanTwoYearsOld ? (age.Year-1).ToString() + " years" : (age.Year-1 >= 1 ? age.Month + 12 : age.Month).ToString() + " months";
}

Upvotes: -1

L.B
L.B

Reputation: 116178

I would use NodaTime for this:

var d1 = new NodaTime.LocalDate(1997, 12, 10);
var d2 = new NodaTime.LocalDate(2012, 11, 13);

var period = NodaTime.Period.Between(d1, d2);
var m = period.Months;
var y = period.Years;

Upvotes: 5

NoPyGod
NoPyGod

Reputation: 5067

I've literally lost an hour+ to this challenge, I thought it would be simple. Have found this answer on another SO question which may be useful

C# Formatting Age - Regarding Days, Weeks , Months - Years

Upvotes: 0

Jonathan Allen
Jonathan Allen

Reputation: 70337

var now = DateTime.Today;

int months = 0;
while (true)
{
    var temp = dob.AddMonths((int)months);
    if (now < temp)
    {
        if (now.Day < temp.Day)
            months--; //accounts for short months
        break;
    }
    months++;
}

if (months < 24)
    return (months + " months");
else
    return (Math.Floor( (decimal)months / 12.0M) + " years");

Upvotes: 0

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