如何在Parallel.Foreach中处理异常？ [英] How to handle exceptions in Parallel.Foreach?

问题描述

我的代码中有一个parallel.Foreach循环，我想知道如何处理异常。我应该在循环内捕获并处理（例如写入日志）异常，还是在外部捕获聚集异常-在try / catch中捕获循环？

I have a parallel.Foreach loop in my code and I am wondering how to handle exceptions. Should I catch and handle(e.g write to log) exceptions inside the loop or should I catch aggregate exception outside - encapuslate the loop in try/catch?

最诚挚的问候

推荐答案

我应该在循环内捕获并处理异常，还是应该在

Should I catch and handle exceptions inside the loop or should I catch aggregate exception outside

这两个在功能上并不等效。两者都可以并且可以以不同的方式来完成。

Those two are not functionally equivalent. Both can be done, and in different ways.

但是更基本的问题是：当一个或多个迭代遇到异常时，是否要处理其余项？

But the more fundamental question is: when one or more iterations suffer an exception, do you want the remaining items to be processed or not?

如果是，则在循环中处理它们，可能像在 MSDN示例。

如果没有，则只需尝试一下/抓住Parallel循环本身即可。

If yes, then handle them inside the loop, possibly storing them like in the MSDN example.
If not, just put a try/catch around the Parallel loop itself.

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