有没有办法等待TPL任务而不抛出异常？ [英] Is there a way to Wait for a TPL Task without in throwing an exception?

问题描述

我们中有些人喜欢代码的异常光的风格。不过，如果你等待TPL任务，任务抛出一个异常，它会抛出调用线程上的异常，以及。是否有一个（最好是标准）的方式来避免这种情况，只是检查异常的反应，当你把它找回来？

Some of us prefer to code in an exception-light style. However, if you wait for a TPL task, and the task threw an exception, it will throw an exception on the calling thread as well. Is there a (preferably standard) way to avoid this behaviour and just check the response for exceptions when you get it back?

推荐答案

你可以使用像Task.WaitAny：

You can use Task.WaitAny like:

        var task = Task.Run(() =>
        {
            // ...
            throw new Exception("Blah");
        });
        Task.WaitAny(task);
        if (task.IsFaulted)
        {
            var error = task.Exception;
            // ...
        }
        else if (task.IsCanceled)
        {
            // ...
        }
        else
        {
            // Success
        }

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