对于C#任务，在检查.Result之前必须先使用Wait()? [英] With C# tasks, Wait() necessary before checking .Result?

问题描述

写在非 async 方法中，此代码之间是否有任何区别...

Written inside a non-async method, is there any difference between this code...

return MyMethodAsync().Result;

...下面呢?

var task = MyMethodAsync();

task.Wait();

return task.Result;

也就是说，这两个行为是完全相同的吗?

That is to say, is the behavior of those two the identical?

说第二个代码段不会阻塞正在执行的线程(调用 MyMethodAsync()的 non- async 方法)是否正确?，而第一个呢?

Is it correct to say that the second snippet does not block the executing thread (the non-async method calling MyMethodAsync()), while the first does?

推荐答案

是的，最终结果是相同的:如果您经历了这些，最终它可能会调用 InternalWait .

Yes the net result is the same: If you wade through that, eventually it may call InternalWait.

http://referencesource.microsoft.com/#mscorlib/system/threading/Tasks/Future.cs，e1c63c9e90fb2f26

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