Powershell - 使用動態參數值

Question

我想在Powershell中使用動態參數，但參數的值在我運行完腳本後似乎不存在。

[CmdletBinding()] 
Param ( 
    [Parameter(
    Mandatory=$true, 
    Position=0, 
    HelpMessage = "The entity ID for the Version" 
    )] 
    [string]$TPVersionID, 

    [Parameter(
    Mandatory=$true, 
    Position=1, 
    HelpMessage = "" 
    )] 
    [string]$VersionNumber, 

    [Parameter(
    Mandatory=$true, 
    Position=2, 
    HelpMessage = "This is a boolean value; enter any value to make it True, leave it blank to make it False." 
    )] 
    [bool]$PullVersionDoc 
    ) 


function Get-VersionParam{ 
    [CmdletBinding()] 
    Param ([string]$TPVersionID, [string]$VersionNumber, [bool]$PullVersionDoc?) 
    DynamicParam { 
     if ($PullVersionDoc) { 
      write-host("HEY!") 
       $attributes = new-object System.Management.Automation.ParameterAttribute 
       $attributes.Position = 3 
       $attributes.Mandatory = $true 
       $attributeCollection = new-object ` 
        -Type System.Collections.ObjectModel.Collection[System.Attribute] 
       $attributeCollection.Add($attributes) 

       $dynParam1 = new-object ` 
        -Type System.Management.Automation.RuntimeDefinedParameter('VersionDocumentID', [Int32], $attributeCollection) 

       $paramDictionary = new-object ` 
        -Type System.Management.Automation.RuntimeDefinedParameterDictionary 
       $paramDictionary.Add('VersionDocumentID', $dynParam1) 
       return $paramDictionary 

     } 

    } 
} 


Get-VersionParam 


#Write-Host "Dynamic Parameter PullVersionDoc? = " $PullVersionDoc 
Write-Host $PSBoundParameters 

我希望腳本索要[VersionDocumentID]如果[PullVersionDoc]布爾值爲TRUE在腳本以後使用，但是當我寫出來的[$ PSBoundParameters]參數沒有按」不存在。我如何獲得價值以便我可以使用它？

Answer 1

以下是我嘗試使用動態參數獲取配置管理器日誌的方法。

幸得blog post here

用法：Get-CCMLogs -ComputerNames -Remote -RemoteLogName <Tab to complete lognames>

本地用法：Get-CCMLogs -ComputerNames -LocalLogName <Tab to complete lognames>

動態PARAM會返回一個遠程日誌名稱。如果輸入開關-Remote或返回本地日誌名稱，如果未輸入開關-Remote。

Function Get-CCMLogs { 

[CmdletBinding()] 

Param(

    [Parameter(Mandatory=$false, 
     ValueFromPipeline=$true, 
     ValueFromPipelineByPropertyName=$true, 
     HelpMessage="Give me a list of computer names!")] 
    [Alias('Hostname','cn')] 
    [string[]]$ComputerNames = $env:COMPUTERNAME, 

    [switch]$Remote 

) 

DynamicParam{ 

    IF($Remote){ 

    $ParameterName = 'RemoteLogName' 

    $RunTimeDictionary = New-Object System.Management.Automation.RuntimeDefinedParameterDictionary 

    $AttributeCollection = New-Object System.Collections.ObjectModel.Collection[System.Attribute] 

    $ParamAttribute = New-Object System.Management.Automation.ParameterAttribute 
    $ParamAttribute.Mandatory = $true 
    $ParamAttribute.Position = 1 

    $AttributeCollection.Add($ParamAttribute) 

    $ValidateItems = Get-ChildItem -Path "\\$ComputerNames\C$\Windows\CCM\Logs" | Where {$_ -notmatch '\d+'} | Select -ExpandProperty FullName 
    $ValidateSetAttribute = New-Object System.Management.Automation.ValidateSetAttribute($ValidateItems) 

    $AttributeCollection.Add($ValidateSetAttribute) 

    $RunTimeParam = New-Object System.Management.Automation.RuntimeDefinedParameter($ParameterName, [string], $AttributeCollection) 

    $RunTimeDictionary.Add($ParameterName, $RunTimeParam) 

    Return $RunTimeDictionary 

    } ELSE { 

    $ParameterName = 'LocalLogName' 

    $RunTimeDictionary = New-Object System.Management.Automation.RuntimeDefinedParameterDictionary 

    $AttributeCollection = New-Object System.Collections.ObjectModel.Collection[System.Attribute] 

    $ParamAttribute = New-Object System.Management.Automation.ParameterAttribute 
    $ParamAttribute.Mandatory = $true 
    $ParamAttribute.Position = 1 

    $AttributeCollection.Add($ParamAttribute) 

    $ValidateItems = Get-ChildItem -Path C:\Windows\CCM\Logs | Select -ExpandProperty FullName | Where {$_ -notmatch '\d+'} 
    $ValidateSetAttribute = New-Object System.Management.Automation.ValidateSetAttribute($ValidateItems) 

    $AttributeCollection.Add($ValidateSetAttribute) 

    $RunTimeParam = New-Object System.Management.Automation.RuntimeDefinedParameter($ParameterName, [string], $AttributeCollection) 

    $RunTimeDictionary.Add($ParameterName, $RunTimeParam) 

    Return $RunTimeDictionary 

    } 

} 

Begin{ 

    $LogName = $PSBoundParameters[$ParameterName] 

} 

Process{ 

     cmtrace.exe $LogName 

} 

}