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ID:12508613
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时间:2018-07-17
《c_时间日期函数大全》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、--DateTime数字型System.DateTimecurrentTime=newSystem.DateTime();取当前年月日时分秒currentTime=System.DateTime.Now;取当前年int年=currentTime.Year;取当前月int月=currentTime.Month;取当前日int日=currentTime.Day;取当前时int时=currentTime.Hour;取当前分int分=currentTime.Minute;取当前秒int秒=currentTime.Second;取当前毫秒int毫秒=currentTim
2、e.Millisecond;(变量可用中文)取中文日期显示——年月日时分stringstrY=currentTime.ToString("f");//不显示秒取中文日期显示_年月stringstrYM=currentTime.ToString("y");取中文日期显示_月日stringstrMD=currentTime.ToString("m");取当前年月日,格式为:2003-9-23stringstrYMD=currentTime.ToString("d");取当前时分,格式为:14:24stringstrT=currentTime.ToString("t
3、");DateTime.Now.ToString();//获取当前系统时间完整的日期和时间DateTime.Now.ToLongDateString();//只显示日期xxxx年xx月xx日,一个是长日期DateTime.Now.ToShortDateString();//只显示日期xxxx-xx-xx一个是短日期//今天DateTime.Now.Date.ToShortDateString();//昨天的DateTime.Now.AddDays(-1).ToShortDateString();//明天的DateTime.Now.AddDays(1).ToSh
4、ortDateString();//本周(注意这里的每一周是从周日始至周六止)DateTime.Now.AddDays(Convert.ToDouble((0-Convert.ToInt16(DateTime.Now.DayOfWeek)))).ToShortDateString();DateTime.Now.AddDays(Convert.ToDouble((6-Convert.ToInt16(DateTime.Now.DayOfWeek)))).ToShortDateString();//上周,上周就是本周再减去7天DateTime.Now.AddDays
5、(Convert.ToDouble((0-Convert.ToInt16(DateTime.Now.DayOfWeek)))-7).ToShortDateString();DateTime.Now.AddDays(Convert.ToDouble((6-Convert.ToInt16(DateTime.Now.DayOfWeek)))-7).ToShortDateString();//下周本周再加上7天DateTime.Now.AddDays(Convert.ToDouble((0-Convert.ToInt16(DateTime.Now.DayOfWeek)
6、))+7).ToShortDateString();DateTime.Now.AddDays(Convert.ToDouble((6-Convert.ToInt16(DateTime.Now.DayOfWeek)))+7).ToShortDateString();//本月本月的第一天是1号,最后一天就是下个月一号再减一天。DateTime.Now.Year.ToString()+DateTime.Now.Month.ToString()+"1";//第一天DateTime.Parse(DateTime.Now.Year.ToString()+DateTime.
7、Now.Month.ToString()+"1").AddMonths(1).AddDays(-1).ToShortDateString();//最后一天另一种方法:DateTimenow=DateTime.Now;DateTimed1=newDateTime(now.Year,now.Month,1);//本月第一天DateTimed2=d1.AddMonths(1).AddDays(-1);//本月最后一天PS:DateTime.Now.DayOfWeek.ToString();//英文星期显示,Wednesday(int)DateTime.Now.Day
8、OfWeek数字,若是周三,结果对应为
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