给定一个日期，如何找到（类的DateTime ）的第三个周五在该日期的月份？

Given a date (of type DateTime), how do I find the 3rd Friday in the month of that date?

推荐答案

我没有测试过这一点，但由于第三个星期五不可能在本月15日之前发生的，创建一个新的日期时间，然后就开始递增，直到你到了周五。

I haven't tested this, but since the third Friday can't possibly occur before the 15th of the month, create a new DateTime, then just increment until you get to a Friday.

DateTime thirdFriday= new DateTime(yourDate.Year, yourDate.Month, 15);

while (thirdFriday.DayOfWeek != DayOfWeek.Friday)
{
   thirdFriday = thirdFriday.AddDays(1);
}