events - Powershell:功能参数

我正在构建Powershell函数，以便可以查询多台计算机的事件日志。香港专业教育学院复制下面的代码，我需要帮助。如果不发送eventID，我希望脚本查找所有事件ID，我该如何实现？

#this would be the parameter part of the script
[String]$ComputerName = $env:COMPUTERNAME#Current computer
[String[]]$EventLogNames=@("Application","System")#Main eventlogs
[int[]]$EventIds = 1 #Event Ids
[System.DateTime[]]$EventStartDate = (((Get-Date).addDays(-2)).date)#date 10 days ago
[System.DateTime[]]$EventEndTime = (Get-Date)#date 10 days ago

#This fits in the process section
$EventCritea = @{logname = $EventLogNames; StartTime=$EventStartDate; EndTime=$EventEndTime; ID=$EventIds}
Get-WinEvent -ComputerName $ComputerName -FilterHashTable $EventCritea  -ErrorAction SilentlyContinue

最佳答案

首先，您的其他question修复了$EventStartDate和$EventEndTime的类型。

对于此问题:逐步构建哈希表:

$filter = @{logname = $EventLogNames; StartTime=$EventStartDate; EndTime=$EventEndTime}

if ($EventIds -ne $null -and $EventIds.Length -gt 0) {
  $filter.ID=$EventIds
}

Get-WinEvent -ComputerName $ComputerName -FilterHashTable $filter #...