blocks|key|4217380|text|是的，每当等待事件的线程收到信号时，AutoResetEvent都会自动重置它的状态。然而，有可能给定的事件不再有效，并且自最初设置AutoResetEvent以来没有线程等待它。在这种情况下，Reset方法就变得有用了|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4217381|entityMap^0|I|E|1U|E|2P|5|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

Yes the <code>AutoResetEvent</code> will automatically reset it's state whenever a thread which is waiting on the event is signaled. However it's possible that a given event is no longer valid and no thread has waited on an <code>AutoResetEvent</code> since it was originally set. In that scenario the <code>Reset</code> method becomes useful

blocks|key|2142661|text|看起来像是从EventWaitHandle继承过来的。对于同样继承自该类的ManualResetEvent，可能更有用？|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2142662|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.threading.eventwaithandle.aspx^0|6|F|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Looks like it's just inherited from <a href="http://msdn.microsoft.com/en-us/library/system.threading.eventwaithandle.aspx" rel="nofollow">EventWaitHandle</a>. Probably more useful with the ManualResetEvent which also inherits from that class?

blocks|key|2142740|text|该方法继承自基类EventWaitHandle，用于(重新)将AutoResetEvent设置为其"blocked“状态。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2142741|因为一旦发出信号，AutoResetEvent就会自动进入这种状态，所以您通常不会在代码中看到这种方法，但是对于从EventWaitHandle派生的其他类来说，它会更有用！|2142742|entityMap^0|8|F|V|E|0|9|E|1L|F|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|I|$]]

The method is inherited from the base class <code>EventWaitHandle</code> and is used to (re)set an <code>AutoResetEvent</code> to its "blocked" state.

Because <code>AutoResetEvent</code> will automatically enter that state as soon as it's signalled, you'll typically never see this method used in code, but for other classes deriving from <code>EventWaitHandle</code> it would be much more useful!

blocks|key|2424742|text|如果AutoResetEvent生产者想要清除该事件，您可以使用Reset()。这样，您就可以安全地“重置”事件，而不必知道它当前是否已发出信号。如果生产者使用WaitOne来“重置”它自己的事件，就会有死锁的风险(即永远不会返回，因为事件没有被通知，生产者线程被阻塞了)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2424743|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|$]]

If the AutoResetEvent producer wants to clear the event, you would use Reset(). This way, you can safely "reset" the event without having to know if it's currently signaled. If the producer used WaitOne to "reset" it's own event, there is a risk that you could deadlock (i.e. never return since the event isn't signaled and the producer thread is blocked).

blocks|key|2142844|text|重置|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2142845|2142846|将事件的状态设置为无信号，请参见EventWaitHandle+Class|blockquote|2142847|2142848|2142849|示例：|2142850|using+System;
using+System.Threading;
namespace+ThreadingInCSharp.Signaling
{
++++class+Program
++++{
++++++++static+EventWaitHandle+_waitHandle+=+new+AutoResetEvent(false);
++++++++static+void+Main(string[]+args)
++++++++{
++++++++++++//The+event's+state+is+Signal
++++++++++++_waitHandle.Set();
++++++++++++new+Thread(Waiter).Start();
++++++++++++Thread.Sleep(2000);
++++++++++++_waitHandle.Set();
++++++++++++Console.ReadKey();
++++++++}
++++++++private+static+void+Waiter()
++++++++{
++++++++++++Console.WriteLine("I'm+Waiting...");
++++++++++++_waitHandle.WaitOne();
++++++++++++//The+word+pass+will+print+immediately+
++++++++++++Console.WriteLine("pass");
++++++++}
++++}
}|code-block|syntax|javascript|2142851|使用Reset，|2142852|using+System;
using+System.Threading;
namespace+ThreadingInCSharp.Signaling
{
++++class+Program
++++{
++++++++static+EventWaitHandle+_waitHandle+=+new+AutoResetEvent(false);
++++++++static+void+Main(string[]+args)
++++++++{
++++++++++++//The+event's+state+is+Signal
++++++++++++_waitHandle.Set();
++++++++++++_waitHandle.Reset();
++++++++++++new+Thread(Waiter).Start();
++++++++++++Thread.Sleep(2000);
++++++++++++_waitHandle.Set();
++++++++++++Console.ReadKey();
++++++++}

++++++++private+static+void+Waiter()
++++++++{
++++++++++++Console.WriteLine("I'm+Waiting...");
++++++++++++_waitHandle.WaitOne();
++++++++++++//The+word+will+wait+2+seconds+for+printing
++++++++++++Console.WriteLine("pass");
++++++++}
++++}
}|2142853|entityMap|0|LINK|mutability|MUTABLE|url|https://msdn.microsoft.com/en-us/library/system.threading.eventwaithandle.aspx^0|0|2|0|0|G|L|0|0|0|0|0|0|2|5|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@$9|15|A|16|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|17|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|18|8|@]|D|@$9|19|A|1A|1|1B]]|E|$]]|$1|J|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]|$1|K|3|-4|5|6|7|1D|8|@]|D|@]|E|$]]|$1|L|3|M|5|6|7|1E|8|@]|D|@]|E|$]]|$1|N|3|O|5|P|7|1F|8|@]|D|@]|E|$Q|R]]|$1|S|3|T|5|6|7|1G|8|@$9|1H|A|1I|B|C]]|D|@]|E|$]]|$1|U|3|V|5|P|7|1J|8|@]|D|@]|E|$Q|R]]|$1|W|3|-4|5|6|7|1K|8|@]|D|@]|E|$]]]|X|$Y|$5|Z|10|11|E|$12|13]]]]

Reset:

<blockquote>
 Sets the state of the event to nonsignaled
 ,See <a href="https://msdn.microsoft.com/en-us/library/system.threading.eventwaithandle.aspx" rel="nofollow noreferrer">EventWaitHandle Class</a>
</blockquote>

Sample,

<pre><code>using System;
using System.Threading;
namespace ThreadingInCSharp.Signaling
{
 class Program
 {
 static EventWaitHandle _waitHandle = new AutoResetEvent(false);
 static void Main(string[] args)
 {
 //The event's state is Signal
 _waitHandle.Set();
 new Thread(Waiter).Start();
 Thread.Sleep(2000);
 _waitHandle.Set();
 Console.ReadKey();
 }
 private static void Waiter()
 {
 Console.WriteLine("I'm Waiting...");
 _waitHandle.WaitOne();
 //The word pass will print immediately 
 Console.WriteLine("pass");
 }
 }
}
</code></pre>

Using Reset,

<pre><code>using System;
using System.Threading;
namespace ThreadingInCSharp.Signaling
{
 class Program
 {
 static EventWaitHandle _waitHandle = new AutoResetEvent(false);
 static void Main(string[] args)
 {
 //The event's state is Signal
 _waitHandle.Set();
 _waitHandle.Reset();
 new Thread(Waiter).Start();
 Thread.Sleep(2000);
 _waitHandle.Set();
 Console.ReadKey();
 }

 private static void Waiter()
 {
 Console.WriteLine("I'm Waiting...");
 _waitHandle.WaitOne();
 //The word will wait 2 seconds for printing
 Console.WriteLine("pass");
 }
 }
}
</code></pre>

blocks|key|2424672|text|在使用Reset()时，您应该使用ManualResetEvent，因为AutoResetEvent会在线程变为有信号时重置自身。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2424673|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|$]]

You should use ManualResetEvent when using Reset(), as AutoResetEvent resets itself when a thread has become signaled.

Could someone introduce an use case for AutoResetEvent.Reset() method ?
When and why I would like to use this method ?
I understand WaitOne and Set but this is quite unclear for me.

AutoResetEvent Reset method

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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有人能介绍一下AutoResetEvent.Reset()方法的用例吗？我想在什么时候和为什么要使用这种方法？我理解WaitOne和Set，但这对我来说并不是很清楚。

问AutoResetEvent重置方法
EN

回答 6

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问AutoResetEvent重置方法
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