如何让子线程休眠而不冻结 WPF 应用程序中的 UI 线程？
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How to make a child thread sleep without freezing UI thread in WPF application?
提问by Rohit Vats
I have a WPF application and I have individual threads running to accomplish tasks and I would like to have the current thread to go to sleep something like,
我有一个 WPF 应用程序，我有单独的线程在运行以完成任务，我想让当前线程进入睡眠状态，例如，
Thread.CurrentThread.Sleep(10000)
Thread.CurrentThread.Sleep(10000)
I do see it in Java but not in C#. I do know that I only have only one UI thread, so if I use Thread.Sleep(10000) my UI thread will be block. I am using async and await from .NET 4.5.
我确实在 Java 中看到它，但在 C# 中没有。我知道我只有一个 UI 线程，所以如果我使用 Thread.Sleep(10000) 我的 UI 线程将被阻塞。我正在使用 .NET 4.5 的异步和等待。
var words = await Task.Factory.StartNew(() => { StringMgr.TextToUniqueWords(File.ReadAllText(filename));
// I want to be able to sleep this thread for 10 seconds, without the UI freezing
});
var words = await Task.Factory.StartNew(() => { StringMgr.TextToUniqueWords(File.ReadAllText(filename));
// 我希望能够让这个线程休眠 10 秒，而不会冻结 UI
});
So how do I put a child thread to sleep without freezing the UI thread in a WPF application?
那么如何在不冻结 WPF 应用程序中的 UI 线程的情况下让子线程进入睡眠状态？
Thanks!
谢谢！
回答by Stephen Cleary
Since you're already using async, you can just do it the asynchronous way:
由于您已经在使用async，您可以以异步方式进行操作：
var words = await Task.Run(async () =>
{
StringMgr.TextToUniqueWords(File.ReadAllText(filename));
await Task.Delay(TimeSpan.FromSeconds(10));
});
However, I suspect that sleeping is the wrong solution for the actual problem you're trying to solve. If you'd like to post another question with your actual problem, you may find a better solution.
但是，我怀疑睡眠是您要解决的实际问题的错误解决方案。如果您想就实际问题发布另一个问题，您可能会找到更好的解决方案。
回答by Rohit Vats
Have you tried it? Sleeping thread inside a Task won't freeze your GUIbut it will make the current background thread to go in sleep mode and your UI will remain responsive always -
你试过吗？Sleeping thread inside a Task won't freeze your GUI但它会使当前的后台线程进入睡眠模式，并且您的 UI 将始终保持响应-
Task.Factory.StartNew(() =>
{
Thread.Sleep(5000000); // this line won't make UI freeze.
});
Thread.Sleep(5000000); // But this will certainly do.
