怎么得到指定日期的前5天，考虑闰年。

Question

比如我输入string=“20090801“

如何才能得到包含指定日期以及此前5天日期的字符数组呢？

就是得到20090801 20080731 20090731 20090729 20090728 20090727

Answer 1

DateTime.TryPrase

DateTime,AddDays

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Answer 2

      string sDateTime = "20090801";
      IFormatProvider ifp = new System.Globalization.CultureInfo("zh-cn", true);
      DateTime dateTime = DateTime.ParseExact(sDateTime, "yyyyMMdd", ifp); 
      string[] sDateList = new string[6];
      for (int i = 0; i < 6; i++)
      {
        sDateList[i] = dateTime.AddDays(-i).ToString("yyyyMMdd");
      }

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Answer 3

牛人啊，学习了