关于datetime：C＃年，月，周和日的日期差异

C# Date Difference in Year, Month, Week and Days

本问题已经有最佳答案，请猛点这里访问。

有人能解决这个问题吗？

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public static void Main()
{
DateTime date1, date2;
int Years, Months,Weeks, Days;

date1=new DateTime( 2014, 01, 31);
date2=new DateTime( 2014, 01, 31).AddDays(28);

//years
TimeSpan diff = date2 - date1;
Years = (int)((double)diff.Days / 365.2425);
DateTime workingDate = date1.AddYears(Years);

while(workingDate.AddYears(1) <= date2)
{
workingDate = workingDate.AddYears(1);
Years++;
}

//months
diff = date2 - workingDate;
Months = (int)((double)diff.Days/30.436875);
workingDate = workingDate.AddMonths(Months);
while(workingDate.AddMonths(1) < date2)
{
workingDate = workingDate.AddMonths(1);
Months++;
}

//weeks and days
diff = date2 - workingDate;
Weeks = diff.Days / 7; //weeks always have 7 days
Days = diff.Days % 7;

// Output
Console.WriteLine("Years" + Years);
Console.WriteLine("Months" + Months);
Console.WriteLine("Weeks" + Weeks);
Console.WriteLine("Days" + Days);
}

输出是

0年0个月第4周第0天

但它应该显示1个月，其余的0个月。如何解决这个问题。它将适用于所有情况，但不适用于1月至3月和闰年。