c# - 从给定日期计算开始日期和季度名称

Question

如何从给定日期找到开始日期和季度名称(1、2、3 等)？

Answer 1

类似(未经测试):

DateTime date;
int quarterNumber = (date.Month-1)/3+1;
DateTime firstDayOfQuarter = new DateTime(date.Year, (quarterNumber-1)*3+1,1);
DateTime lastDayOfQuarter = firstDayOfQuarter.AddMonths(3).AddDays(-1);