PowerShell ValidateSet [英] PowerShell ValidateSet

问题描述

我真的很喜欢 ValidateSet 的工作方式。在PowerShell ISE中键入Cmdlet时，它会将选项建议为列表。

I really like the way that ValidateSet works. It proposes the options as a list while you type your Cmdlet in the PowerShell ISE.

我想知道是否可以从CSV文件（ Import-CSV ）中检索值，在 Param 块中使用它们，以便在构造Cmdlet参数时它们在PowerShell ISE的下拉框中可用？与 $ Type 现在有效，但是与导入文件中的值相同。

I would like to know if it's possible to retrieve values from a CSV-file (Import-CSV) and use them in the Param block so they become available in the drop down box of the PowerShell ISE when constructing the Cmdlet arguments? A bit in the same way that $Type works now, but then with values from the import file.

Function New-Name {
Param (
    [parameter(Position=0, Mandatory=$true)]
    [ValidateSet('Mailbox','Distribution','Folder','Role')]
    [String]$Type,
    [parameter(Position=1,Mandatory=$true)]
    [String]$Name
)
    Process { 'Foo' }
}

推荐答案

以下是您可以从以下开始：

Here is something you can start with:

function New-Name {
    param (
        [parameter(Position=0, Mandatory=$true)]
        [String]$Name
    )

    dynamicparam {
        $attributes = new-object System.Management.Automation.ParameterAttribute
        $attributes.ParameterSetName = "__AllParameterSets"
        $attributes.Mandatory = $true
        $attributeCollection = new-object -Type System.Collections.ObjectModel.Collection[System.Attribute]
        $attributeCollection.Add($attributes)
        $values = @('MailBox', 'Tralala', 'Trilili') # your Import-Csv here
        $ValidateSet = new-object System.Management.Automation.ValidateSetAttribute($values)
        $attributeCollection.Add($ValidateSet)

        $dynParam1 = new-object -Type System.Management.Automation.RuntimeDefinedParameter("Type", [string], $attributeCollection)
        $paramDictionary = new-object -Type System.Management.Automation.RuntimeDefinedParameterDictionary
        $paramDictionary.Add("Type", $dynParam1)
        return $paramDictionary 
    }

     process { 'Foo' }
}

学分必须到期，这主要来自以下文章。

Credits where credits are due, this largely comes from the following article from the Scripting Guy. The code isn't pretty, but it does what you want.

这篇关于PowerShell ValidateSet的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！