[C#] 如何製作日期迴圈 (foreach datetime)

前言 :
最近遇到需要存取特定時間範圍內的資料，所以需要讓時間可以跑迴圈阿!!!
C#語言很貼心的幫我們實做迭代，所以不用自己實做foreach，但是，沒有實做日期迴圈阿!!!
沒關係，我們來練習一下
先把目標列出來 :

var today = DateTime.Now;
var someday = DateTime.Now.AddDays(+10);

foreach (var day in EachDay(today, someday))
{
 // 處理期間內邏輯...
 Console.WriteLine(day);
}

然後完成這項任務 :

private static IEnumerable<DateTime> EachDay(DateTime from, DateTime thru)
{
        for (var day = from.Date; day.Date <= thru.Date; day = day.AddDays(1))
          yield return day;
}

 貼心一點自己做成Util，方便日後重複使用 :

public static class MyDateHelper
    {
        public static IEnumerable<DateTime> EachDay(DateTime from, DateTime thru)
        {
            for (var day = from.Date; day.Date <= thru.Date; day = day.AddDays(1))
                yield return day;
        }

        public static IEnumerable<DateTime> EachMonth(DateTime from, DateTime thru)
        {
            for (var month = from.Date; month.Date <= thru.Date || month.Month == thru.Month; month = month.AddMonths(1))
                yield return month;
        }

        public static IEnumerable<DateTime> EachDayTo(this DateTime dateFrom, DateTime dateTo)
        {
            return EachDay(dateFrom, dateTo);
        }

        public static IEnumerable<DateTime> EachMonthTo(this DateTime dateFrom, DateTime dateTo)
        {
            return EachMonth(dateFrom, dateTo);
        }
    }

ps. 有問題請歡迎告知，如果好用的話也請多給一些支持唷 (ex. 點一下廣告 : D)