Years Between - CSharp System

CSharp examples for System:DateTime Year

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Description

Years Between

Demo Code


using System.Text;
using System.Linq;
using System.Collections.Generic;
using System;/*from  w  w w. j  av  a  2 s. co  m*/

public class Main{
        public static int YearsBetween(this DateTime dt, DateTime dt2, bool includeLastDay, out int excessMonths)
        {
            int months = dt.MonthsBetween(dt2, includeLastDay);
            excessMonths = months % 12;
            return months / 12;
        }
        public static int YearsBetween(this DateTime dt, DateTime dt2, bool includeLastDay)
        {
            return dt.MonthsBetween(dt2, includeLastDay) / 12;
        }
        public static int YearsBetween(this DateTime dt, DateTime dt2)
        {
            return dt.MonthsBetween(dt2) / 12;
        }
        public static int MonthsBetween(this DateTime dt, DateTime dt2, bool includeLastDay)
        {
            if (!includeLastDay) return dt.MonthsBetween(dt2);
            int days;
            if (dt2 >= dt)
                days = dt2.AddDays(1).DateValue() - dt.DateValue();
            else
                days = dt.AddDays(1).DateValue() - dt2.DateValue();
            return days / 31;
        }
        public static int MonthsBetween(this DateTime dt, DateTime dt2)
        {
            int months = (dt2.DateValue() - dt.DateValue()) / 31;
            return Math.Abs(months);
        }
}

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