How to calculate age from date of birth and display in a textbox.

DateTime d1=DateTime.Now ;
DateTime d2 = new DateTime(1978,4,5);
TimeSpan difference = d1.Subtract(d2);
difference.TotalDays/365.25).ToString();

or

//call function
int age= Age(DateTime.Parse("4/26/1973"));
//function
public static int Age(DateTime birthDate)
{
int years, months, days;
DateDiff(DateTime.Now, birthDate, out years, out months, out days);
return years;
}

Happy Coding!
:)

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

http://forums.asp.net/p/1082692/1604940.aspx[^]

public void monthCalendar1_DateChanged(object sender, DateRangeEventArgs e)
{
txt_Birth.Text = Convert.ToString(monthCalendar1.SelectionStart.Date);
int s = monthCalendar1.SelectionStart.Year;
DateTime date = DateTime.Now;
int cur_year = Convert.ToInt32(date.Year);
age = cur_year - s;
txt_age.Text = Convert.ToString(age);
}

public static int GetPersonAge(DateTime birthdate, DateTime AgeOnThisDate)
{
    int age = AgeOnThisDate.Year - birthdate.Year;
    if (AgeOnThisDate.Month < birthdate.Month || (AgeOnThisDate.Month == birthdate.Month && AgeOnThisDate.Day < birthdate.Day))
        age--;
    if (age < 0)
        return 0;
    else
        return age;
}

public string calculateAge( int currentyear, int currentmonth, int currentday, int birthYear, int birthMonth, int birthDay )
{
    int age = 0;
    if ( currentmonth > birthMonth )
        age = currentyear - birthYear;
    else if ( currentmonth < birthMonth )
        age = currentyear - birthYear - 1;
    else // month == birthMonth
    {
        if ( currentday < birthDay )
            age = currentyear - birthYear - 1;
        else
            age = currentyear - birthYear;
    }

    return age.ToString();
} // END calculateAge

How to calculate age in c#?[^]