blocks|key|473207|text|使用Timer类。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|473208|public+static+void+Main()
{
++++System.Timers.Timer+aTimer+=+new+System.Timers.Timer();
++++aTimer.Elapsed+%2B=+new+ElapsedEventHandler(OnTimedEvent);
++++aTimer.Interval+=+5000;
++++aTimer.Enabled+=+true;

++++Console.WriteLine("Press+\'q\'+to+quit+the+sample.");
++++while(Console.Read()+!=+'q');
}

+//+Specify+what+you+want+to+happen+when+the+Elapsed+event+is+raised.
+private+static+void+OnTimedEvent(object+source,+ElapsedEventArgs+e)
+{
+++++Console.WriteLine("Hello+World!");
+}|code-block|syntax|javascript|473209|由Timer对象上的Interval属性指定的Elapsed事件将每X毫秒引发一次。它将调用您指定的Event+Handler方法。在上面的示例中，它是OnTimedEvent。|473210|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.microsoft.com/en-us/dotnet/api/system.timers.timer?redirectedfrom=MSDN&view=netframework-4.8^0|2|5|2|5|0|0|0|A|8|N|7|1E|D|24|C|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|F|3|G|5|H|7|10|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]|$9|16|A|17|B|C]|$9|18|A|19|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

Use the <a href="https://docs.microsoft.com/en-us/dotnet/api/system.timers.timer?redirectedfrom=MSDN&amp;view=netframework-4.8" rel="noreferrer"><code>Timer</code></a> class.

<pre><code>public static void Main()
{
 System.Timers.Timer aTimer = new System.Timers.Timer();
 aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
 aTimer.Interval = 5000;
 aTimer.Enabled = true;

 Console.WriteLine("Press \'q\' to quit the sample.");
 while(Console.Read() != 'q');
}

 // Specify what you want to happen when the Elapsed event is raised.
 private static void OnTimedEvent(object source, ElapsedEventArgs e)
 {
 Console.WriteLine("Hello World!");
 }
</code></pre>

The <code>Elapsed</code> event will be raised every X amount of milliseconds, specified by the <code>Interval</code> property on the Timer object. It will call the <code>Event Handler</code> method you specify. In the example above, it is <code>OnTimedEvent</code>.

blocks|key|256935|text|通过使用System.Windows.Forms.Timer类，您可以实现所需的功能。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|256936|System.Windows.Forms.Timer+t+=+new+System.Windows.Forms.Timer();


t.Interval+=+15000;+//+specify+interval+time+as+you+want
t.Tick+%2B=+new+EventHandler(timer_Tick);
t.Start();

void+timer_Tick(object+sender,+EventArgs+e)
{
++++++//Call+method
}|code-block|syntax|javascript|256937|通过使用stop()方法，您可以停止计时器。|256938|t.Stop();|256939|entityMap^0|4|Q|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

By using <code>System.Windows.Forms.Timer</code> class you can achieve what you need.

<pre><code>System.Windows.Forms.Timer t = new System.Windows.Forms.Timer();


t.Interval = 15000; // specify interval time as you want
t.Tick += new EventHandler(timer_Tick);
t.Start();

void timer_Tick(object sender, EventArgs e)
{
 //Call method
}
</code></pre>

By using stop() method you can stop timer.

<pre><code>t.Stop();
</code></pre>

blocks|key|257022|text|将ServiceBase引用到您的类，并将以下代码放入OnStart事件中：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|257023|Constants.TimeIntervalValue+=+1+(小时)..Ideally您应该在配置文件中设置此值。|257024|StartSendingMails+=要在应用程序中运行的函数名。|257025|+protected+override+void+OnStart(string[]+args)
++++++++{
++++++++++++//+It+tells+in+what+interval+the+service+will+run+each+time.
++++++++++++Int32+timeInterval+=+Int32.Parse(Constants.TimeIntervalValue)+*+60+*+60+*+1000;
++++++++++++base.OnStart(args);
++++++++++++TimerCallback+timerDelegate+=+new+TimerCallback(StartSendingMails);
++++++++++++serviceTimer+=+new+Timer(timerDelegate,+null,+0,+Convert.ToInt32(timeInterval));
++++++++}|code-block|syntax|javascript|257026|entityMap^0|1|B|R|7|0|0|V|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|Y|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|Z|8|@]|D|@]|E|$M|N]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

Reference <code>ServiceBase</code> to your class and put the below code in the <code>OnStart</code>event:

<code>Constants.TimeIntervalValue = 1</code> (hour)..Ideally you should set this value in config file.

StartSendingMails = function name you want to run in the application.

<pre><code> protected override void OnStart(string[] args)
 {
 // It tells in what interval the service will run each time.
 Int32 timeInterval = Int32.Parse(Constants.TimeIntervalValue) * 60 * 60 * 1000;
 base.OnStart(args);
 TimerCallback timerDelegate = new TimerCallback(StartSendingMails);
 serviceTimer = new Timer(timerDelegate, null, 0, Convert.ToInt32(timeInterval));
 }
</code></pre>

What is the best way to implement a timer? A code sample would be great! For this question, "best" is defined as most reliable (least number of misfires) and precise. If I specify an interval of 15 seconds, I want the target method invoked every 15 seconds, not every 10 - 20 seconds. On the other hand, I don't need nanosecond accuracy. In this example, it would be acceptable for the method to fire every 14.51 - 15.49 seconds.

What is the best way to implement a "timer"?

Windows

实现计时器的最佳方式是什么？一个代码样例将会很棒！对于这个问题，“最佳”被定义为最可靠(失火次数最少)和精确。如果我指定的间隔是15秒，我希望目标方法每15秒调用一次，而不是每10 - 20秒调用一次。另一方面，我不需要纳秒精度。在本例中，该方法每14.51 - 15.49秒触发一次是可以接受的。

问实现“定时器”的最佳方式是什么？
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问实现“定时器”的最佳方式是什么？EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问实现“定时器”的最佳方式是什么？
EN