powershell - 捕获 Get-EventLog 错误

Question

我正在编写一个简单的脚本来解析一些事件日志，但我需要在没有结果或 instanceid 无效时消除一些错误:

PS C:\> get-eventlog Application -instanceid 1111

Get-EventLog : No matches found
At line:1 char:13
  + get-eventlog <<<<  Application -instanceid 1111
      + CategoryInfo          : ObjectNotFound: (:) [Get-EventLog], ArgumentException
      + FullyQualifiedErrorId : GetEventLogNoEntriesFound,Microsoft.PowerShell.Commands.GetEventLogCommand

我可以这样做并将其静音，但这也会静音其他错误:

PS C:\> try { get-eventlog Application -instanceid 1111 -erroraction stop } catch { }

我试过了，但没用:

PS C:\> try { get-eventlog Application -instanceid 1111 -erroraction stop } catch [ObjectNotFound] { }

Unable to find type [ObjectNotFound]: make sure that the assembly containing this type is loaded.
At line:1 char:91
  + try { get-eventlog Application -instanceid 1111 -erroraction stop } catch [ObjectNotFound] <<<< { }
     + CategoryInfo          : InvalidOperation: (ObjectNotFound:String) [], RuntimeException
     + FullyQualifiedErrorId : TypeNotFound

Answer 1

您可以使用 -ErrorAction SilentlyContinue 并在它之后检查您的 $error 变量，

$error[0] 

它将始终包含最后一个错误对象。