如何使用 C# 找到一个月内的第三个星期五?

问题描述

给定一个日期(DateTime 类型)，我如何找到该日期所在月份的第三个星期五?

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

推荐答案

我没有测试过这个，但是由于第三个星期五不可能发生在当月的 15 号之前，创建一个新的 DateTime，然后增加直到你到了星期五.

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);
}

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