为WaitAll VS WhenAll [英] WaitAll vs WhenAll

问题描述

什么是 Task.WaitAll之间的差值（）和 TaskEx.WhenAll（）从异步CTP？
你能提供一些示例code来说明不同的使用情况？

What is the difference between Task.WaitAll() and TaskEx.WhenAll() from the Async CTP ? Can you provide some sample code to illustrate the different use cases ?

推荐答案

Task.WaitAll ，直到一切都已经完成了阻塞当前线程。

Task.WaitAll blocks the current thread until everything has completed.

TaskEx.WhenAll 返回任务的其中重presents等待，直到一切都已经完成了行动。

TaskEx.WhenAll returns a task which represents the action of waiting until everything has completed.

这意味着，从异步方法，你可以使用：

That means that from an async method, you can use:

await TaskEx.WhenAll(tasks);

...这意味着你的方法将继续当一切都完成了，但你不会阻碍线程只是流连到那个时候。

... which means your method will continue when everything's completed, but you won't tie up a thread to just hang around until that time.

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