C# 星期相关代码实例
本文为引用文章 仅作整理自用 原文链接: https://www.cnblogs.com/yxyl/p/9992841.html @网吧看压力大
从周一到周日的顺序,获取排序数值:
int i = DateTime.Now.DayOfWeek - DayOfWeek.Monday; if (i == -1) i = 6;
获取某日起,星期一的日期:
public static DateTime GetMondayDate(DateTime someDate) { int i = someDate.DayOfWeek - DayOfWeek.Monday; if (i == -1) i = 6;// i值 > = 0 ,因为枚举原因,Sunday排在最前,此时Sunday-Monday=-1,必须+7=6。 TimeSpan ts = new TimeSpan(i, 0, 0, 0); return someDate.Subtract(ts); }
获取当前时间上周六的时间:
public DateTime GetLastSaturday() { DateTime time = DateTime.Now; if (time.DayOfWeek == DayOfWeek.Sunday) { time = time.AddDays(-2); } else time = time.AddDays(-1); while (time.DayOfWeek != DayOfWeek.Saturday) { time = time.AddDays(-1); } return time; }