Task.Delay与DispatcherTimer? [英] Task.Delay vs DispatcherTimer?

问题描述

我正在考虑将Task.Delay()用于不间断计时器，因为它更简单易读.

I'm considering use Task.Delay() for a non-stop timer, because it's more simple and readable.

由于我是.NET的新手，所以我认为这两个代码之间没有显着差异.您能告诉我它们之间的区别(如果有)吗?

As I'm new to .NET, I see no significant difference between the two codes. Can you show me the difference (if there is any) between them?

// Create variable at some place
DispatcherTimer timer = new DispatcherTimer();

timer.Interval = TimeSpan.FromSeconds(5);
timer.Tick += timer_Elapsed;
timer.Start();

// Function other place
void timer_Elapsed(object sender, EventArgs e)
{
    //Do stuff
    }

vs

// Every thing inside a function
async void TaskTimer()
{
    while (true)
    {
        await Task.Delay(5000);
        // Do stuff
    }
}

推荐答案

有两个主要区别:

1. Task.Delay方法将在个循环之间延迟指定的时间，而DispatcherTimer方法将在指定的循环时间开始一个新的循环.
2. Task.Delay具有更高的可移植性，因为它不依赖于绑定到特定UI的类型.

1. The Task.Delay approach will delay the specified amount of time between cycles, while the DispatcherTimer approach will start a new cycle on the specified cycle time.
2. Task.Delay is more portable, since it does not depend on a type tied to a specific UI.

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