C#实现计算年龄的简单方法汇总

using System;using System.Collections.Generic;using System.Text; namespace PublicClass{  public static class CalculationDate  {    /// <summary>    /// 由两个日期计算出年龄(岁、月、天)    /// </summary>    public static void calculationDate(DateTime beginDateTime, DateTime endDateTime)    {      if (beginDateTime > endDateTime)        throw new Exception("开始时间应小于或等与结束时间！");       /*计算出生日期到当前日期总月数*/      int Months = endDateTime.Month - beginDateTime.Month + 12 * (endDateTime.Year - beginDateTime.Year);      /*出生日期加总月数后，如果大于当前日期则减一个月*/      int totalMonth = (beginDateTime.AddMonths(Months) > endDateTime) ? Months - 1 : Months;      /*计算整年*/      int fullYear = totalMonth / 12;      /*计算整月*/      int fullMonth = totalMonth % 12;      /*计算天数*/      DateTime changeDate = beginDateTime.AddMonths(totalMonth);      double days = (endDateTime - changeDate).TotalDays;    }  }}

public int CalculateAgeCorrect(DateTime birthDate, DateTime now){  int age = now.Year - birthDate.Year;  if (now.Month < birthDate.Month || (now.Month == birthDate.Month && now.Day < birthDate.Day)) age--;  return age;}

    string m_Str = "1984-04-04";    int m_Y1 = DateTime.Parse(m_Str).Year;    int m_Y2 = DateTime.Now.Year;    int m_Age = m_Y2 - m_Y1;    Response.Write(m_Age);

   int now =int.Parse(DateTime.Today.ToString("yyyyMMdd"));  int dob =int.Parse(dateDOB.ToString("yyyyMMdd"));  string dif =(now - dob).ToString();  string age ="0";  if(dif.Length>4)    age = dif.Substring(0, dif.Length-4);

DateTime now =DateTime.Today;int age = now.Year- bday.Year;if(bday > now.AddYears(-age)) age--;