停止15秒后运行代码 [英] Stop running the code after 15 seconds

问题描述

我想写点东西停止运行运行15秒后的代码。

I'm trying to write something to stop running the code after 15 seconds of running.

我不希望在循环或其他类型的循环中使用，并想用IF-ELSE条件，而不是因为它会在我的代码更适合我。

I don't want While loop or any kind of loop to be used and would like to use IF-ELSE conditions instead as it would make it easier for me in my code.

我想停止15秒后执行代码的部分是一个FOR循环本身。让我们考虑，例如下面的代码：

The part of code I want to stop being executed after 15 seconds is a FOR loop itself. Let's consider the below code for example:

for (int i = 1; i < 100000; i++)
{
    Console.WriteLine("This is test no. "+ i+ "\n");
}

您将如何运行15秒后停止这种循环？

How would you stop this loop after 15 seconds of running?

推荐答案

您可以在具有当前日期和时间循环之前分配的DateTime变量，然后在每个循环迭代只是检查是否15秒已通过：

You can assign DateTime variable before the loop having the current date and time, then in each loop iteration simply check if 15 seconds have passed:

DateTime start = DateTime.Now;
for (int i = 1; i < 100000; i++)
{
    if ((DateTime.Now - start).TotalSeconds >= 15)
        break;
    Console.WriteLine("This is test no. "+ i+ "\n");
}

更​​新：虽然上面通常会工作，它不是防弹，并可能失败一些边缘情况（如Servy在评论中指出 ），造成无端环。更好的做法是使用秒表类，这是的 System.Diagnostics程序的命名空间部分：

Update: while the above will usually work, it's not bullet proof and might fail on some edge cases (as Servy pointed out in a comment), causing endless loop. Better practice would be using the Stopwatch class, which is part of System.Diagnostics namespace:

Stopwatch watch = new Stopwatch();
watch.Start();
for (int i = 1; i < 100000; i++)
{
    if (watch.Elapsed.TotalMilliseconds >= 500)
        break;
    Console.WriteLine("This is test no. " + i + "\n");
}
watch.Stop();

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