这不是.TotalDays作为小于24小时的时段可能仍然通过重叠两个不同的日期返回“2”.同样,相隔两分钟的日期仍应返回“1”.

例如：

2012-2-1 14:00 to 2012-2-2 23:00 -> 2 (1st and 2nd Feb)
2012-2-1 14:00 to 2012-2-2 10:00 -> 2 (1st and 2nd Feb)
2012-2-1 23:00 to 2012-2-2 00:00 -> 2 (1st and 2nd Feb)
2012-2-1 23:00 to 2012-2-3 00:00 -> 3 (1st,2nd,3rd Feb)
2012-2-1 14:00 to 2012-2-1 15:00 -> 1 (1st Feb)
2012-2-1 14:00 to 2012-2-1 14:00 -> 1 (1st Feb)
2012-1-1 00:00 to 2012-12-31 23:59 -> 366 (All of 2012)

我可以使用以下代码获得此功能：

DateTime dt1 = new DateTime(2000,1,2,12,00,00);
DateTime dt2 = new DateTime(2000,3,03,00);

int count = 0;
for (DateTime date = dt1; date.Date <= dt2.Date; date = date.AddDays(1))
    count++;

return count;

有没有更好的办法？