C# 根据出生日期（年月日）计算年龄的代码

C# 根据出生日期（年月日）计算年龄的代码

public int GetAgeByBirthdate(DateTime birthdate)

    {

        DateTime now = DateTime.Now;

        int age = now.Year - birthdate.Year;

        if (now.Month < birthdate.Month || (now.Month == birthdate.Month && now.Day < birthdate.Day))

        {

            age--;

        }

        return age <  ?  : age;

    }