blocks|key|5139122|text|在表单中，最简单的方法是创建一个计时器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5139123|public+Form1()
{
++++InitializeComponent();

++++Timer+timer+=+new+Timer();
++++timer.Interval+=+1000;
++++timer.Tick+%2B=+new+EventHandler(Tick);
}

private+void+Tick(object+sender,+EventArgs+e)
{+...+}|code-block|syntax|javascript|5139124|我猜你甚至可以在窗体之外使用计时器，因为它是一个组件，而不是一个控件。|5139125|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

In a form, the easiest way is to create a timer.

<pre><code>public Form1()
{
 InitializeComponent();

 Timer timer = new Timer();
 timer.Interval = 1000;
 timer.Tick += new EventHandler(Tick);
}

private void Tick(object sender, EventArgs e)
{ ... }
</code></pre>

My guess would be that you can use a Timer even outside a form, since it's a Component and not a Control.

blocks|key|5230524|text|您应该使用System.Threading.Timer：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5230525|private+System.Threading.Timer+timer;

public+YourClass()
{
++++timer+=+new+System.Threading.Timer(UpdateProperty,+null,+1000,+1000);
}

private+void+UpdateProperty(object+state)
{
++++lock(this)
++++{
++++++++//+Update+property+here.
++++}
}|code-block|syntax|javascript|5230526|请记住在读取属性时锁定实例，因为UpdateProperty是在另一个线程(+ThreadPool线程)中调用的|5230527|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You should use System.Threading.Timer:

<pre><code>private System.Threading.Timer timer;

public YourClass()
{
 timer = new System.Threading.Timer(UpdateProperty, null, 1000, 1000);
}

private void UpdateProperty(object state)
{
 lock(this)
 {
 // Update property here.
 }
}
</code></pre>

Remember to lock the instance while reading the property because the UpdateProperty is called in a different thread (a ThreadPool thread)

blocks|key|3017593|text|如果你想在不同的线程上运行，可以使用BackgroundWorker，并将更改属性的逻辑放在DoWork中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3017594|如果你想重复做一些事情，你应该在backgroundworker的DoWork()方法中使用loop，而不是使用Timer类，因为和BackgroundWorker一起使用似乎没有意义。下面是一些粗略的代码：|3017595|public+Form1()
{
++++InitializeComponent();

++++BackgroundWorker+worker+=+new+BackgroundWorker();
++++worker.WorkerSupportsCancellation+=+true;
++++worker.DoWork+%2B=+new+DoWorkEventHandler(DoWork);
}

private+void+DoWork(object+sender,+DoWorkEventArgs+e)
{
++++BackgroundWorker+worker+=+sender+as+BackgroundWorker;
++++int+delay+=+1000;+//+1+second
++++while+(!worker.CancellationPending)
++++{
++++++++do+something
++++++++Thread.Sleep(delay);
++++}
++++e.Cancel+=+true;
}|code-block|syntax|javascript|3017596|每当您想要停止属性更新时，都会像这样调用worker实例上的CancelAsync+-|3017597|worker.CancelAsync();|3017598|entityMap^0|I|G|1A|6|0|X|8|1A|4|1K|5|1U|G|0|0|U|B|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@$9|Y|A|Z|B|C]|$9|10|A|11|B|C]|$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|16|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|17|8|@$9|18|A|19|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|1A|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]]|R|$]]

In case you want to do in on different thread, use <code>BackgroundWorker</code> and put the logic of changing property in <code>DoWork</code>.

If you want to do something repeatedly, you should just use a <code>loop</code> inside the backgroundworker <code>DoWork()</code> method instead of using <code>Timer</code> class since it seems pointless to use with <code>BackgroundWorker</code>. Here's some rough code:

<pre><code>public Form1()
{
 InitializeComponent();

 BackgroundWorker worker = new BackgroundWorker();
 worker.WorkerSupportsCancellation = true;
 worker.DoWork += new DoWorkEventHandler(DoWork);
}

private void DoWork(object sender, DoWorkEventArgs e)
{
 BackgroundWorker worker = sender as BackgroundWorker;
 int delay = 1000; // 1 second
 while (!worker.CancellationPending)
 {
 do something
 Thread.Sleep(delay);
 }
 e.Cancel = true;
}
</code></pre>

Whenever you want to stop the property Updation calls the <code>CancelAsync</code> on worker instance like this -

<pre><code>worker.CancelAsync();
</code></pre>

blocks|key|5230601|text|将属性值基于当前时间(或当前时间与过去的“开始”时间之间的差值)可能更直接，而不是逐字地将属性设置为每秒一个新值。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5230602|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

It might be more straightforward to base the property value on the current time (or the difference between the current time and a past "start" time) rather then literally setting the property to a new value every second.

blocks|key|3017660|text|现在在.net+6中这很简单。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3017661|using+System;
using+System.+Threading;
using+PeriodicTimer+timer+=+new+(TimeSpan.FromSeconds+(1));%7C
+while+(await+timer.WaitForNextTickAsync+())
{
++++//implement+your+code+here
}|code-block|syntax|javascript|3017662|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

It’s very simple in .net 6 now.
<pre><code>using System;
using System. Threading;
using PeriodicTimer timer = new (TimeSpan.FromSeconds (1));|
 while (await timer.WaitForNextTickAsync ())
{
 //implement your code here
}
</code></pre>

I want to make a class change one of its properties every second. The change is supposed to happen on class-level and not in the main thread, how would I do this?

c# how to make periodic events in a class?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想让一个类每秒改变它的一个属性。更改应该发生在类级别，而不是在主线程中，我该如何做呢？

问c#如何在类中创建周期性事件？
EN

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问c#如何在类中创建周期性事件？EN