[UWP]如何使用ThreadPoolTimer.CreatePeriodicTimer立即开始工作 [英] [UWP]How to start a job immediately with ThreadPoolTimer.CreatePeriodicTimer

问题描述

现在的作用就像等待>工作>等待......

如何像工作一样工作>等等>工作......？

https://docs.microsoft.com/en-us/windows/uwp/threading-async/create-a-periodic-work-item

https://docs.microsoft.com/en-us/windows/uwp/threading-async/create-a-periodic-work-item

推荐答案

你好Kevin Jing1，

Hello Kevin Jing1,

可能，这是不可能的立即（同步）进行第一次打勾。但是，通过手动调用TimerElapsedHandler进行第一次"工作"，可以模拟这样的序列。请尝试以下代码。

Probably, it's impossible to make the first tick immediately (synchronously). But it's possible to simulate such a sequence by just calling TimerElapsedHandler manually for the first "work". Try the code below anyway.

{
    TimerElapsedHandler handler = (ThreadPoolTimer timer) =>
    {
        Debug.WriteLine("Tick:\t" + DateTime.Now.ToString());
    };

    Debug.WriteLine("Start:\t" + DateTime.Now.ToString());

    var theTimer = ThreadPoolTimer.CreatePeriodicTimer(handler, TimeSpan.FromSeconds(3));

    handler(theTimer); // Make the first tick manually. 

    // Subsequent ticks are to be made by the ThreadPoolTimer.
}

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