还有一个原因是，静态code分析（=的FxCop）的一个规则点，你当你使用出参数。我会说：只能使用退出当真正需要的互操作类型的场景。在其他情况下，根本就没有退出使用。但也许这只是我？

There is a reason that one of the static code analysis (=FxCop) rules points at you when you use out parameters. I'd say: only use out when really needed in interop type scenarios. In all other cases, simply do not use out. But perhaps that's just me?