DateTime.Ticks 属性

定义

获取表示此实例的日期和时间的计时周期数。

public:
 property long Ticks { long get(); };
public long Ticks { get; }
member this.Ticks : int64
Public ReadOnly Property Ticks As Long

属性值

表示此实例的日期和时间的计时周期数。 该值介于 DateTime.MinValue.TicksDateTime.MaxValue.Ticks 之间。

示例

以下示例使用 Ticks 属性显示自二十一世纪初以来经过的计时周期数,并实例化 TimeSpan 对象。 然后, 对象 TimeSpan 用于显示使用多个其他时间间隔的已用时间。

DateTime centuryBegin = new DateTime(2001, 1, 1);
DateTime currentDate = DateTime.Now;

long elapsedTicks = currentDate.Ticks - centuryBegin.Ticks;
TimeSpan elapsedSpan = new TimeSpan(elapsedTicks);

Console.WriteLine("Elapsed from the beginning of the century to {0:f}:",
                   currentDate);
Console.WriteLine("   {0:N0} nanoseconds", elapsedTicks * 100);
Console.WriteLine("   {0:N0} ticks", elapsedTicks);
Console.WriteLine("   {0:N2} seconds", elapsedSpan.TotalSeconds);
Console.WriteLine("   {0:N2} minutes", elapsedSpan.TotalMinutes);
Console.WriteLine("   {0:N0} days, {1} hours, {2} minutes, {3} seconds",
                  elapsedSpan.Days, elapsedSpan.Hours,
                  elapsedSpan.Minutes, elapsedSpan.Seconds);

// This example displays an output similar to the following:
//
// Elapsed from the beginning of the century to Thursday, 14 November 2019 18:21:
//    595,448,498,171,000,000 nanoseconds
//    5,954,484,981,710,000 ticks
//    595,448,498.17 seconds
//    9,924,141.64 minutes
//    6,891 days, 18 hours, 21 minutes, 38 seconds
open System

let centuryBegin = DateTime(2001, 1, 1)
let currentDate = DateTime.Now

let elapsedTicks = currentDate.Ticks - centuryBegin.Ticks
let elapsedSpan = TimeSpan elapsedTicks

printfn $"Elapsed from the beginning of the century to {currentDate:f}:"
printfn $"   {elapsedTicks * 100L:N0} nanoseconds"
printfn $"   {elapsedTicks:N0} ticks"
printfn $"   {elapsedSpan.TotalSeconds:N2} seconds"
printfn $"   {elapsedSpan.TotalMinutes:N2} minutes"
printfn $"   {elapsedSpan.Days:N0} days, {elapsedSpan.Hours} hours, {elapsedSpan.Minutes} minutes, {elapsedSpan.Seconds} seconds"

// This example displays an output similar to the following:
//
// Elapsed from the beginning of the century to Thursday, 14 November 2019 18:21:
//    595,448,498,171,000,000 nanoseconds
//    5,954,484,981,710,000 ticks
//    595,448,498.17 seconds
//    9,924,141.64 minutes
//    6,891 days, 18 hours, 21 minutes, 38 seconds
Dim centuryBegin As Date = #1/1/2001 0:0:0#
Dim currentDate As Date = Date.Now
Dim elapsedTicks As Long = currentDate.Ticks - centuryBegin.Ticks
Dim elapsedSpan As New TimeSpan(elapsedTicks)

Console.WriteLine("Elapsed from the beginning of the century to {0:f}:", _
                   currentDate)
Console.WriteLine("   {0:N0} nanoseconds", elapsedTicks * 100)
Console.WriteLine("   {0:N0} ticks", elapsedTicks)
Console.WriteLine("   {0:N2} seconds", elapsedSpan.TotalSeconds)
Console.WriteLine("   {0:N2} minutes", elapsedSpan.TotalMinutes)
Console.WriteLine("   {0:N0} days, {1} hours, {2} minutes, {3} seconds", _
                  elapsedSpan.Days, elapsedSpan.Hours, _
                  elapsedSpan.Minutes, elapsedSpan.Seconds)
' If run on December 14, 2007, at 15:23, this example displays the
' following output to the console:
'          219,338,580,000,000,000 nanoseconds
'          2,193,385,800,000,000 ticks
'          219,338,580.00 seconds
'          3,655,643.00 minutes
'          2,538 days, 15 hours, 23 minutes, 0 seconds

注解

一个计时周期表示一百纳秒,即一千万分之一秒。 一毫秒内有 10,000 个时钟周期 () TicksPerMillisecond 和 1000 万个时钟周期在一秒内。

此属性的值表示公历中自公历 1 月 1 日午夜 12:00:00:00 以来经过的 100 纳秒间隔的数目,该间隔表示 MinValue。 它不包括由闰秒引起的滴答数。 如果 DateTime 对象的 Kind 属性设置为 Local,则其计时周期表示自当前时区设置指定的本地时间 0001 年 1 月 1 日午夜 12:00:00 以来经过的时间。 DateTime如果 对象的 Kind 属性设置为 Utc,则其计时周期表示自协调世界时 1 月 1 日午夜 12:00:00 以来经过的时间。0001 年 1 月 1 日。 DateTime如果 对象的 Kind 属性设置为 Unspecified,则其计时周期表示自未知时区中自 1 月 1 日午夜 12:00:00 以来经过的时间。

通常,刻度根据 属性指定的 Kind 时区表示时间。

适用于