如何在Powershell中重新捕获catch块的异常？ [英] How can I Rethrow an exception from catch block in Powershell?

问题描述

我应该以与.Net相同的方式处理异常处理？

然后，如何在Powershell中从catch块重新抛出异常？ p>

'throw'是enoungh或'throw $ _'会更好吗？

解决方案

在PowerShell中的

throw 关键字的行为与.NET实现不同：在.net中，您只能抛出 System.Exceptions 本身或其后继者，但在PowerShell中，您可以抛出任何东西，并自动包装成一个 System.Management.Automation.RuntimeException 。请参阅此处的片段。

如果您喜欢重新抛出原始异常，您可以使用 throw （最常见），或 throw $ _ 或 throw $ _。例外

ps：inside catch code> $ _ 本身不是例外，但 System.Management.Automation.ErrorRecord 包含异常

Should I approach the exception handling in the same manner as .Net?

Then, how can I re-throw an exception from catch block in Powershell?

'throw' is enoungh or 'throw $_' would be better?

解决方案

throw keyword at PowerShell behaves differently then .net implementation: in .net you can only throw System.Exceptions itself or its successors, but in PowerShell, you can throw anything and that is automatically wrapped up into a System.Management.Automation.RuntimeException. See snippet here.

If you like to re-throw original exception you could use throw (most common), or throw $_, or throw $_.Exception

ps: inside catch variable $_ is not exception by itself, but System.Management.Automation.ErrorRecord that contains Exception

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