TimeSpan用法详解

TimeSpan( 10, 20, 30, 40, 50 ) 10.20:30:40.0

TimeSpan( 1111, 2222, 3333, 4444, 5555 ) 1205.22:47:09.

public string DateStringFromNow(DateTime dt) { TimeSpan span = DateTime.Now - dt; if (span.TotalDays > 60) { return dt.ToShortDateString(); } else if ( span.TotalDays > 30 ) { return "1个月前"; } else if (span.TotalDays > 14) { return "2周前"; } else if (span.TotalDays > 7) { return "1周前"; } else if (span.TotalDays > 1) { return string.Format("{0}天前", (int)Math.Floor(span.TotalDays)); } else if (span.TotalHours > 1) { return string.Format("{0}小时前", (int)Math.Floor(span.TotalHours)); } else if (span.TotalMinutes > 1) { return string.Format("{0}分钟前", (int)Math.Floor(span.TotalMinutes)); } else if (span.TotalSeconds >= 1) { return string.Format("{0}秒前", (int)Math.Floor(span.TotalSeconds)); } else { return "1秒前"; } }

C#中使用TimeSpan计算两个时间的差值

可以反加两个日期之间任何一个时间单位。

private string DateDiff(DateTime DateTime1, DateTime DateTime2) {string dateDiff = null; TimeSpan ts1 = new TimeSpan(DateTime1.Ticks); TimeSpan ts2 = new TimeSpan(DateTime2.Ticks); TimeSpan ts = ts1.Subtract(ts2).Duration(); dateDiff = ts.Days.ToString()+"天"+ ts.Hours.ToString()+"小时"+ ts.Minutes.ToString()+"分钟"+ ts.Seconds.ToString()+"秒"; return dateDiff; } TimeSpan ts = Date1 - Date2; double dDays = ts.TotalDays;//带小数的天数，比如1天12小时结果就是1.5 int nDays = ts.Days;//整数天数，1天12小时或者1天20小时结果都是1 

/// <summary> /// 日期比较 /// </summary> /// <param name="today">当前日期</param> /// <param name="writeDate">输入日期</param> /// <param name="n">比较天数</param> /// <returns>大于天数返回true，小于返回false</returns> private bool CompareDate(string today, string writeDate, int n) { DateTime Today = Convert.ToDateTime(today); DateTime WriteDate = Convert.ToDateTime(writeDate); WriteDate = WriteDate.AddDays(n); if (Today >= WriteDate) return false; else return true; }

示例代码：

<table width="100%" border="1" cellspacing="0" cellpadding="0"> <tr> <td>TimeSpan('T','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('T','2002-10-1','2002-1-1')" --></td> </tr> <tr> <td>TimeSpan('d','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('d','2002-10-1','2002-1-1')" --></td> </tr> <tr> <td>TimeSpan('h','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('h','2002-10-1','2002-1-1')" --></td> </tr> <tr> <td>TimeSpan('u','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('u','2002-10-1','2002-1-1')" --></td> </tr> <tr> <td>TimeSpan('m','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('m','2002-10-1','2002-1-1')" --></td> </tr> <tr> <td>TimeSpan('s','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('s','2002-10-1','2002-1-1')" --></td> </tr> <tr> <td>TimeSpan('D','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('D','2002-10-1','2002-1-1')" --></td> </tr> <tr> <td>TimeSpan('H','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('H','2002-10-1','2002-1-1')" MaxChar="" DChar="" Safety="False" --></td> </tr> <tr> <td>TimeSpan('U','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('U','2002-10-1','2002-1-1')" MaxChar="" DChar="" Safety="False" --></td> </tr> <tr> <td>TimeSpan('M','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('M','2002-10-1','2002-1-1')" MaxChar="" DChar="" Safety="False" --></td> </tr> <tr> <td>TimeSpan('S','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('S','2002-10-1','2002-1-1')" MaxChar="" DChar="" Safety="False" --></td> </tr> <tr> <td>TimeSpan('相差d天h小时','2002-10-1','2002-1-1')</td> <td> <!-- NoahValue ValueName="TimeSpan('相差d天h小时','2002-10-1','2002-1-1')" MaxChar="" DChar="" Safety="False" --></td> </tr> </table>