blocks|key|50384|text|这可以通过使用.NET中的Stopwatch类来实现，只需简单地停止和启动，就可以继续使用秒表的实例。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|50385|确保使用using+System.Diagnostics;|50386|var+timer+=+new+Stopwatch();
timer.Start();
timer.Stop();
Console.WriteLine(timer.Elapsed);

timer.Start();+//Continues+the+timer+from+the+previously+stopped+time
timer.Stop();
Console.WriteLine(timer.Elapsed);|code-block|syntax|javascript|50387|要重置秒表，只需调用Reset或Restart方法，如下所示：|50388|timer.Reset();
timer.Restart();|50389|entityMap^0|D|9|0|4|P|0|0|A|5|G|7|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|14|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|R|$]]

You achieve this by using the <code>Stopwatch</code> class in .NET. By simply stopping and starting you continue the use of the instance of the stopwatch.

Make sure to make use of <code>using System.Diagnostics;</code>

<pre><code>var timer = new Stopwatch();
timer.Start();
timer.Stop();
Console.WriteLine(timer.Elapsed);

timer.Start(); //Continues the timer from the previously stopped time
timer.Stop();
Console.WriteLine(timer.Elapsed);
</code></pre>

To reset the stopwatch, just call the <code>Reset</code> or <code>Restart</code> methods, like below:

<pre><code>timer.Reset();
timer.Restart();
</code></pre>

blocks|key|50491|text|没有停顿，因为很容易做同样的事情。你可以停止计时器而不是暂停它，然后当你需要重新启动它时，你只需要指定剩余的时间量。它可能很复杂，也可能很简单；这取决于您使用计时器做什么。事实上，你做什么取决于你使用计时器做什么，这可能是暂停不存在的原因。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|50492|您可能正在使用计时器在固定的时间段重复做某事，或者您可能正在使用计时器倒计时到特定的时间。如果您正在重复做某事(例如每秒)，那么您的要求可能是在该时间段的开始(一秒)或该时间段的一部分重新启动。如果暂停的时间超过该时间段，会发生什么？通常，遗漏的事件会被忽略，但这取决于需求。|50493|所以我想说的是，你需要确定你的需求。然后，如果你需要帮助，那就澄清你需要什么。|50494|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

There is not a pause because it is easy to do the equivalent. You can just stop the timer instead of pausing it, then when you need to restart it you just need to specify the amount of time remaining. It might be complicated or it might be simple; it depends on what you are using the timer to do. The fact that what you do depends on what you are using the timer for is probably the reason a pause does not exist.

You might be using the timer to do something repetitively at a regular time period or you might be using the timer to count down to a specific time. If you are doing something (such as every second) repetitively then your requirements might be to restart at the beginning of that time period (a second) or at a portion of that period. What happens if the pause is for more than the time period? Usually the missed events would be ignored but that depends on requirements.

So I am trying to say that you need to determine your requirements. Then if you need help then clarify what you need.

blocks|key|4557111|text|我已经为这种情况创建了这个类：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4557112|public+class+PausableTimer+:+Timer
{
++++public+double+RemainingAfterPause+{+get;+private+set;+}

++++private+readonly+Stopwatch+_stopwatch;
++++private+readonly+double+_initialInterval;
++++private+bool+_resumed;

++++public+PausableTimer(double+interval)+:+base(interval)
++++{
++++++++_initialInterval+=+interval;
++++++++Elapsed+%2B=+OnElapsed;
++++++++_stopwatch+=+new+Stopwatch();
++++}

++++public+new+void+Start()
++++{
++++++++ResetStopwatch();
++++++++base.Start();
++++}

++++private+void+OnElapsed(object+sender,+ElapsedEventArgs+elapsedEventArgs)
++++{
++++++++if+(_resumed)
++++++++{
++++++++++++_resumed+=+false;
++++++++++++Stop();
++++++++++++Interval+=+_initialInterval;
++++++++++++Start();
++++++++}

++++++++ResetStopwatch();
++++}

++++private+void+ResetStopwatch()
++++{
++++++++_stopwatch.Reset();
++++++++_stopwatch.Start();
++++}

++++public+void+Pause()
++++{
++++++++Stop();
++++++++_stopwatch.Stop();
++++++++RemainingAfterPause+=+Interval+-+_stopwatch.Elapsed.TotalMilliseconds;
++++}

++++public+void+Resume()
++++{
++++++++_resumed+=+true;
++++++++Interval+=+RemainingAfterPause;
++++++++RemainingAfterPause+=+0;
++++++++Start();
++++}

}|code-block|syntax|javascript|4557113|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|$]]

I have created this class for this situation:

<pre><code>public class PausableTimer : Timer
{
 public double RemainingAfterPause { get; private set; }

 private readonly Stopwatch _stopwatch;
 private readonly double _initialInterval;
 private bool _resumed;

 public PausableTimer(double interval) : base(interval)
 {
 _initialInterval = interval;
 Elapsed += OnElapsed;
 _stopwatch = new Stopwatch();
 }

 public new void Start()
 {
 ResetStopwatch();
 base.Start();
 }

 private void OnElapsed(object sender, ElapsedEventArgs elapsedEventArgs)
 {
 if (_resumed)
 {
 _resumed = false;
 Stop();
 Interval = _initialInterval;
 Start();
 }

 ResetStopwatch();
 }

 private void ResetStopwatch()
 {
 _stopwatch.Reset();
 _stopwatch.Start();
 }

 public void Pause()
 {
 Stop();
 _stopwatch.Stop();
 RemainingAfterPause = Interval - _stopwatch.Elapsed.TotalMilliseconds;
 }

 public void Resume()
 {
 _resumed = true;
 Interval = RemainingAfterPause;
 RemainingAfterPause = 0;
 Start();
 }

}
</code></pre>

I have a C# program in which, I need the timer to stop if the user stops interacting with the program. What It needs to do is pause, and then restart when the user becomes active again. I have done some research, and found that there is commands such as:

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

and

<pre><code>timer.Start();
</code></pre>

But I was wondering if there was like a:

<pre><code>timer.Pause();
</code></pre>

And then when the user becomes active again, it picks up where it left off, and doesn't restart. If anyone can help, it would be much appreciated!
Thanks,

Micah

C# How to pause a timer?

我有一个C#程序，在这个程序中，如果用户停止与程序交互，我需要计时器停止。它需要做的是暂停，然后在用户再次变为活动状态时重新启动。我做了一些研究，发现有这样的命令：timer.Stop(); 和timer.Start();但我想知道有没有这样的：timer.Pause();然后，当用户再次变为活动状态时，它会从停止的位...

问C#如何暂停计时器？
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