DateTime.AddDays 与 Calendar.AddDays

问题描述

DateTime.AddDays 和 Calendar.AddDays 有什么区别?
DateTime 类型的日历是独立的吗?

What is the difference between DateTime.AddDays and Calendar.AddDays?
Is DateTime type calendar independent?

推荐答案

DateTime.AddDays 只是将天数转换为刻度，并将此刻度数添加到日期时间.Calendar.AddDays 的默认实现完全相同.但是，由于它是一种虚拟方法，因此可以以更复杂的方式在特定日历中实现，例如像这里的东西:http://codeblog.jonskeet.uk/2010/12/01/the-joys-of-date-time-arithmetic/

DateTime.AddDays just converts days to ticks and adds this number of ticks to the date time. The default implementation of Calendar.AddDays does exactly the same. However, since it is a virtual method it can be implemented in specific calendar in a more complicated way, e.g. something like here: http://codeblog.jonskeet.uk/2010/12/01/the-joys-of-date-time-arithmetic/

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