网站建设亿玛酷信赖,舟山城乡建设部网站首页,月子中心网站设计,网站自动发送邮件获取 本周、本月、本年 的开始或结束时间 public class DateTimeUtil{// 获取 本周、本月、本年 的开始或结束时间/// summary/// 获取开始时间/// /summary/// param nameTimeTypeWeek、Month、Year/param/// param namesummary/// 获取开始时间/// /summary/// param nameTimeTypeWeek、Month、Year/param/// param nameNowTime当前时间/param/// returns/returnspublic static string GetStarTimetByType(string TimeType, DateTime NowTime){switch (TimeType){case Week:return NowTime.AddDays((7 - (int)NowTime.DayOfWeek) % 7 - 7 1).ToString(yyyy-MM-dd 00:00:00);case Month:return NowTime.AddDays(-NowTime.Day 1).ToString(yyyy-MM-dd 00:00:00);case Year:return NowTime.AddDays(-NowTime.DayOfYear 1).ToString(yyyy-MM-dd 00:00:00);default://出错啦throw new NotImplementedException();}}/// summary/// 获取结束时间/// /summary/// param nameTimeTypeWeek、Month、Year/param/// param nameNowTime当前时间/param/// returns/returnspublic static string GetEndTimeByType(string TimeType, DateTime NowTime){switch (TimeType){case Week:return NowTime.AddDays((7 - (int)NowTime.DayOfWeek) % 7).ToString(yyyy-MM-dd 23:59:59);case Month:return NowTime.AddDays(-NowTime.AddMonths(1).Day 1).AddMonths(1).AddDays(-1).ToString(yyyy-MM-dd 23:59:59);case Year:return NowTime.AddDays(-NowTime.DayOfYear 1).AddYears(1).AddDays(-1).ToString(yyyy-MM-dd 23:59:59);default://出错啦throw new NotImplementedException();}}/// summary/// 根据第几周 获取开始时间和结束时间/// /summary/// param nameweek第几周/param/// param namemonth当前时间的月份/param/// returns/returnspublic static TupleDateTime, DateTime GetWeeks(int? week, int? month){DateTime dt DateTime.Parse(${DateTime.Now.Year}-{month.Value}-{DateTime.Now.Day});string[] arrDate0 new string[6];string[] arrDate1 new string[6];//年int year dt.Year;//月//当前月第一天DateTime weekStart new DateTime(year, month.Value, 1);//该月的最后一天DateTime monEnd weekStart.AddMonths(1).AddDays(-1);int i 1;//当前月第一天是星期几int dayOfWeek Convert.ToInt32(weekStart.DayOfWeek.ToString(d));//该月第一周结束日期DateTime weekEnd dayOfWeek 0 ? weekStart : weekStart.AddDays(7 - dayOfWeek);string content ;// content 第 i 周起始日期 weekStart.ToShortDateString() 结束日期 weekEnd.ToShortDateString() \n;arrDate0[0] weekStart.ToString(yyyy-MM-dd 00:00:00);arrDate1[0] weekEnd.ToString(yyyy-MM-dd 23:59:59);//当日期小于或等于该月的最后一天while (weekEnd.AddDays(1) monEnd){i;//该周的开始时间weekStart weekEnd.AddDays(1);//该周结束时间weekEnd weekEnd.AddDays(7) monEnd ? monEnd : weekEnd.AddDays(7);arrDate0[i - 1] weekStart.ToString(yyyy-MM-dd 00:00:00);arrDate1[i - 1] weekEnd.ToString(yyyy-MM-dd 23:59:59);}content year 年 month 月共有 i 周\n;return Tuple.Create(DateTime.Parse(arrDate0[week.Value]), DateTime.Parse(arrDate1[week.Value]));}}
