标题 | C#时间操作类时间计算等 |
范文 | 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天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: 001using System; 002using System.Collections.Generic; 003using System.Linq; 004using System.Text; 005namespace CLB.Utility.CharTools 006{ 007 public static class DateTimeHelper 008 { 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 /// 014 public static string DateStringFromNow(DateTime dt) 015 { 016 TimeSpan span = DateTime.Now - dt; 017 if (span.TotalDays > 60) 018 { 019 return dt.ToShortDateString(); 020 } 021 else if (span.TotalDays > 30) 022 { 023 return "1个月前"; 024 } 025 else if (span.TotalDays > 14) 026 { 027 return "2周前"; 028 } 029 else if (span.TotalDays > 7) 030 { 031 return "1周前"; 032 } 033 else if (span.TotalDays > 1) 034 { 035 return string.Format("{0}天前", (int)Math.Floor(span.TotalDays)); 036 } 037 else if (span.TotalHours > 1) 038 { 039 return string.Format("{0}小时前", (int)Math.Floor(span.TotalHours)); 040 } 041 else if (span.TotalMinutes > 1) 042 { 043 return string.Format("{0}分钟前", (int)Math.Floor(span.TotalMinutes)); 044 } 045 else if (span.TotalSeconds >= 1) 046 { 047 return string.Format("{0}秒前", (int)Math.Floor(span.TotalSeconds)); 048 } 049 else 050 { 051 return "1秒前"; 052 } 053 } 054 /// 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 /// 062 public static string DateDiff(DateTime DateTime1, DateTime DateTime2, bool isTotal) 063 { 064 TimeSpan ts = DateTime2 - DateTime1; 065 if (isTotal) 066 //带小数的天数,比如1天12小时结果就是1.5 067 return ts.TotalDays.ToString(); 068 else 069 //整数天数,1天12小时或者1天20小时结果都是1 070 return ts.Days.ToString(); 071 } 072 /// 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 /// 078 public static string DateDiff(DateTime DateTime1, DateTime DateTime2) 079 { 080 string dateDiff = null; 081 TimeSpan ts1 = new TimeSpan(DateTime1.Ticks); 082 TimeSpan ts2 = new TimeSpan(DateTime2.Ticks); 083 TimeSpan ts = ts1.Subtract(ts2).Duration(); 084 //TimeSpan ts=ts1.Add(ts2).Duration(); 085 dateDiff = ts.Days.ToString() + "天" + ts.Hours.ToString() + "小时" + ts.Minutes.ToString() + "分钟"+ ts.Seconds.ToString() + "秒"; 086 return dateDiff; 087 } 088 /// 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 /// 094 public static string WhichDay(string enWeek) 095 { 096 switch (enWeek.Trim()) 097 { 098 case "Sunday": 099 return "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 "星期四"; 108 case "Friday": 109 return "星期五"; 110 case "Saturday": 111 return "星期六"; 112 default: 113 return enWeek; 114 } 115 } 116 /// 117 /// 日期比较 118 /// 119 /// 当前日期 120 /// 输入日期 121 /// 比较天数 122 /// 大于天数返回true,小于返回false 123 public static bool CompareDate(string today, string writeDate, int n) 124 { 125 DateTime Today = Convert.ToDateTime(today); 126 DateTime WriteDate = Convert.ToDateTime(writeDate); 127 WriteDate = WriteDate.AddDays(n); 128 if (Today >= WriteDate) 129 return false; 130 else 131 return true; 132 } 133 /// 134 /// 根据出生年月进行生日提醒 135 /// 136 /// 137 /// 138 public static string GetBirthdayTip(DateTime birthday) 139 { 140 DateTime now = DateTime.Now; 141 //TimeSpan span = DateTime.Now - birthday; 142 int nowMonth = now.Month; 143 int birtMonth = birthday.Month; 144 if (nowMonth == 12 && birtMonth == 1) 145 return string.Format("下月{0}号", birthday.Day); 146 if (nowMonth == 1 && birtMonth == 12) 147 return string.Format("上月{0}号", birthday.Day); 148 int months = now.Month - birthday.Month; 149 //int days = now.Day - birthday.Day; 150 if (months == 1) 151 return string.Format("上月{0}号", birthday.Day); 152 else if (months == -1) 153 return string.Format("下月{0}号", birthday.Day); 154 else if (months == 0) 155 { 156 if (now.Day == birthday.Day) 157 return "今天"; 158 return string.Format("本月{0}号", birthday.Day); 159 } 160 else if (months > 1) 161 return string.Format("已过{0}月", months); 162 else 163 return string.Format("{0}月{1}日", birthday.Month, birthday.Day); 164 } 165 } 166} |
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