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c# 在几秒钟后停止流读取器。这可能吗？

发布于 2024-09-12 15:03:33 字数 106 浏览 12 评论 0原文

我有网络请求，我使用流阅读器读取信息。我想在 15 秒后停止在这个流读取器之后。因为有时阅读过程需要更多时间，但有时却进展顺利。如果阅读过程花费的时间超过 15 秒，我该如何停止它？我开放所有想法。

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半﹌身腐败 2024-09-19 15:03:33

使用 System.Threading.Timer 并设置一个 15 秒的滴答事件。它不是最干净的，但它会起作用。或者也许是秒表

--stopwatch 选项

        Stopwatch sw = new Stopwatch();
        sw.Start();
        while (raeder.Read() && sw.ElapsedMilliseconds < 15000)
        {

        }

--Timer 选项

        Timer t = new Timer();
        t.Interval = 15000;
        t.Elapsed += new ElapsedEventHandler(t_Elapsed);
        t.Start();
        read = true;
        while (raeder.Read() && read)
        {

        }
    }

    private bool read;
    void t_Elapsed(object sender, ElapsedEventArgs e)
    {
        read = false;
    }

Use a System.Threading.Timer and set an on tick event for 15 seconds. It's not the cleanest but it would work. or maybe a stopwatch

--stopwatch option

        Stopwatch sw = new Stopwatch();
        sw.Start();
        while (raeder.Read() && sw.ElapsedMilliseconds < 15000)
        {

        }

--Timer option

        Timer t = new Timer();
        t.Interval = 15000;
        t.Elapsed += new ElapsedEventHandler(t_Elapsed);
        t.Start();
        read = true;
        while (raeder.Read() && read)
        {

        }
    }

    private bool read;
    void t_Elapsed(object sender, ElapsedEventArgs e)
    {
        read = false;
    }

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睫毛溺水了 2024-09-19 15:03:33

既然您说“网络请求”，我假设流读取器包装了您通过调用 httpWebRequest.GetResponse 从 HttpWebRequest 实例获取的 System.IO.Stream ().GetResponseStream()。

如果是这种情况，您应该查看 <代码>HttpWebRequest.ReadWriteTimeout。

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谜兔 2024-09-19 15:03:33

您必须在另一个线程中运行该任务，并从主线程监视它的运行时间是否超过 15 秒：

string result;
Action asyncAction = () =>
{
    //do stuff
    Thread.Sleep(10000); // some long running operation
    result = "I'm finished"; // put the result there
};

// have some var that holds the value
bool done = false;
// invoke the action on another thread, and when done: set done to true
asyncAction.BeginInvoke((res)=>done=true, null);

int msProceeded = 0;
while(!done)
{
    Thread.Sleep(100); // do nothing
    msProceeded += 100;

    if (msProceeded > 5000) break; // when we proceed 5 secs break out of this loop
}

// done holds the status, and result holds the result
if(!done)
{
    //aborted
}
else
{
    //finished
    Console.WriteLine(result); // prints I'm finished, if it's executed fast enough
}

You will have to run the task in another thread, and monitor from your main thread whether it's running longer than 15 seconds:

string result;
Action asyncAction = () =>
{
    //do stuff
    Thread.Sleep(10000); // some long running operation
    result = "I'm finished"; // put the result there
};

// have some var that holds the value
bool done = false;
// invoke the action on another thread, and when done: set done to true
asyncAction.BeginInvoke((res)=>done=true, null);

int msProceeded = 0;
while(!done)
{
    Thread.Sleep(100); // do nothing
    msProceeded += 100;

    if (msProceeded > 5000) break; // when we proceed 5 secs break out of this loop
}

// done holds the status, and result holds the result
if(!done)
{
    //aborted
}
else
{
    //finished
    Console.WriteLine(result); // prints I'm finished, if it's executed fast enough
}

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