C#时间操作类时间计算等

1、一个C#时间工具类，可用于时间计算，比如根据出生年月实现生日提醒、两个日期天数比较、根据英文的星期几返回中文的星期几、计算两个时间的差值，返回的是x夭x小时x分钟x秒、时间相差值、根据时间返回几个月前，几天前，几小时前，几分钟前以及几秒前，现在用不到的话，先收藏吧，代码如下：001usingSystem;002usingSystem.Collections.Generic;003usingSystem.Linq;004usingSystem.Text;005namespaceCLB.Utility.CharTools006(007publicstaticclassDateTimeHelper0

2、08(009/010/根据时间返回几个月前，几天前，几小时前，几分钟前以及几秒前011/012/013/014publicstaticstringDateStringFromNow(DateTimedt)015(016TimeSpanspan=DateTime.Now-dt;017if(span.TotalDays>60)018(019returndt.ToShortDateString();020021elseif(span.TotalDays>30)022(023return"1个月前"024025elseif(span.TotalDays&

3、amp;gt;14)026(027return"2周前"028029elseif(span.TotalDays>7)030(031return"1周前"032033elseif(span.TotalDays>1)034(035returnstring.Format("0天前"，(int)Math.Floor(span.TotalDays);036037elseif(span.TotalHours>1)038039returnstring.Format("0小时前",(int

4、)Math.Floor(span.TotalHours);040041elseif(span.TotalMinutes>1)042043returnstring.Format("0分钟前",(int)Math.Floor(span.TotalMinutes);044045elseif(span.TotalSeconds>=1)046047returnstring.Format("0秒前”，(int)Math.Floor(span.TotalSeconds);048049else050051return"1秒前"052

5、053054/055/时间相差值，返回时间差056/调用时,isTotal为true时，返回的时带小数的天数，否则返回的是整数057/058/059/060/061/062publicstaticstringDateDiff(DateTimeDateTime1,DateTimeDateTime2,boolisTotal)063064TimeSpants=DateTime2-DateTime1;065if(isTotal)066带小数的天数，比如1天12小时结果就是1.5067returnts.TotalDays.ToString();068else069整数夭数，1夭12小时或者1夭20小时结

6、果都是1070returnts.Days.ToString();071072/073/计算两个时间的差值，返回的是x天x小时x分钟x秒074/075/076/077/078publicstaticstringDateDiff(DateTimeDateTime1,DateTimeDateTime2)079080stringdateDiff=null;081TimeSpants1=newTimeSpan(DateTime1.Ticks);082TimeSpants2=newTimeSpan(DateTime2.Ticks);083TimeSpants=ts1.Subtract(ts2).Durat

7、ion();084/TimeSpants=ts1.Add(ts2).Duration();085dateDiff=ts.Days.ToString()+"夭"+ts.Hours.ToString()+"小时"+ts.Minutes.ToString()+"分钟"+ts.Seconds.ToString()+"秒"086returndateDiff;087088/089/根据英文的星期几返回中文的星期几090/如WhichDay("Sunday”),返回星期日091/092/093/094publicsta

8、ticstringWhichDay(stringenWeek)095096switch(enWeek.Trim()097098case"Sunday":099return"星期日"100 case"Monday":101 return"星期一"102 case"Tuesday":103 return”星期二"104 case"Wednesday":105 return”星期三"106 case"Thursday":107 return&

9、quot;星期四"108 case"Friday":109 return"星期五"110 case"Saturday":111 return"星期六"112 default:113 returnenWeek;114 115 116 /117 /日期比较118 /119 /当前日期120 /输入日期121 /比较夭数122 /大于天数返回true，小于返回false123 publicstaticboolCompareDate(stringtoday,stringwriteDate,intn)124 125

10、 DateTimeToday=Convert.ToDateTime(today);126 DateTimeWriteDate=Convert.ToDateTime(writeDate);127 WriteDate=WriteDate.AddDays(n);128 if(Today>=WriteDate)129 returnfalse;130 else131 returntrue;132 133 /134 /根据出生年月进行生日提醒135 /136 /137 /138 publicstaticstringGetBirthdayTip(DateTimebirthday)139 140

11、 DateTimenow=DateTime.Now;141 /TimeSpanspan=DateTime.Now-birthday;142 intnowMonth=now.Month;143 intbirtMonth=birthday.Month;144 if(nowMonth=12&&birtMonth=1)145 returnstring.Format(”下月0号",birthday.Day);146 if(nowMonth=1&&birtMonth=12)147 returnstring.Format("

12、上月0号",birthday.Day);148 intmonths=now.Month-birthday.Month;149 /intdays=now.Day-birthday.Day;150 if(months=1)151 returnstring.Format("上月0号",birthday.Day);152 elseif(months=-1)153 returnstring.Format("下月0号",birthday.Day);154 elseif(months=0)155 156 if(now.Day=birthday.Day)157 return"今天"158 returnstring.Format("本月0号",birt