将异步回调传递给Timer构造函数 [英] Pass async Callback to Timer constructor

问题描述

我有一个异步回调，该回调传递给Timer(来自System.Threading)构造函数:

I have async callback, which is passed into Timer(from System.Threading) constructor :

private async Task HandleTimerCallback(object state)
{
    if (timer == null) return;

    if (asynTaskCallback != null)
    {
        await HandleAsyncTaskTimerCallback(state);
    }
    else
    {
        HandleSyncTimerCallback(state);
    }
}

和计时器:

timer = new Timer(async o => await HandleTimerCallback(o), state, CommonConstants.InfiniteTimespan,
            CommonConstants.InfiniteTimespan);

有什么办法可以省略lambda中的o参数吗?不同步的原因，我只能将我的handler作为委托通过

Is there any way to omit that o param in lambda? Cause for not-async I can just pass my handler as delegate

 timer = new Timer(HandleTimerCallback, state, CommonConstants.InfiniteTimespan,
            CommonConstants.InfiniteTimespan);

推荐答案

有什么方法可以省略lambda中的o参数吗?

Is there any way to omit that o param in lambda?

当然，只需将事件处理程序方法定义为async void:

Sure, just define your event handler method as async void:

private async void HandleTimerCallback(object state)

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