什么Cmdlet使用ihostuiSupportsMultipleChoiceSelection接口提示选择?

请不要理会我的第一个回答,我现在看这根本不是一个回答。感谢你提出了一个非常有趣的问题。

我仍然不知道使用该接口的Cmdlet。但是我们可以从脚本中自己使用它。让我们修改上述get-choice.ps1并调用新的get-choice2.ps1:

<#
.SYNOPSIS
    Displays PowerShell style menu and gets user choices

.DESCRIPTION
    *) Returns choice indexes.
    *) Choice keys are indicated by '&' in menu items.
    *) Help strings can be empty or nulls (items are used themselves).
#>

param
(
    # Menu caption
    [string]$Caption = 'Confirm',
    # Menu message
    [string]$Message = 'Are you sure you want to continue?',
    # Choice info pairs: item1, help1, item2, help2, ...
    [string[]]$Choices = ('&Yes', 'Continue', '&No', 'Stop'),
    # Default choice indexes (i.e. selected on [Enter])
    [int[]]$DefaultChoice = @(0)
)
if ($args) { throw "Unknown parameters: $args" }
if ($Choices.Count % 2) { throw "Choice count must be even." }

$descriptions = @()
for($i = 0; $i -lt $Choices.Count; $i += 2) {
    $c = [System.Management.Automation.Host.ChoiceDescription]$Choices[$i]
    $c.HelpMessage = $Choices[$i + 1]
    if (!$c.HelpMessage) {
        $c.HelpMessage = $Choices[$i].Replace('&', '')
    }
    $descriptions += $c
}

$Host.UI.PromptForChoice($Caption, $Message, [System.Management.Automation.Host.ChoiceDescription[]]$descriptions, $DefaultChoice)

现在我们测试它:

Get-Choice2 'Title' 'Message' -DefaultChoice 0, 1, 2 -Choices @(
    'Choice &1', 'This is choice 1'
    'Choice &2', ''
    'Choice &3', ''
    'Choice &4', ''
    'Choice &5', ''
    'Choice &6', ''
    'Choice &7', ''
    'Choice &8', ''
    'Choice &9', ''
    'Choice &0', ''
)

它打印10个选项,前3个选项突出显示(在控制台主机中),并提示:

0> Test-Get-Choice2.ps1
Title
Message
[1] Choice 1
[2] Choice 2
[3] Choice 3
[4] Choice 4
[5] Choice 5
[6] Choice 6
[7] Choice 7
[8] Choice 8
[9] Choice 9
[0] Choice 0
[?] Help
(default choices are 1,2,3)
Choice[0]:

如果我们按 Enter 立即输出为默认的3个索引:0、1、2。例如,如果我们键入: 5 + Enter + 3 + Enter + 1 + Enter + Enter 然后输出是4,2,0。

它起作用了。PowerShellISE也支持这一点,但在GUI版本中,UI可能更好一些。

例如:命令 Remove-Item C:\TEMP\Test 提示您选择:

Confirm
The item at C:\TEMP\Test has children and the Recurse parameter was not specified. If you continue, all children will be removed with the item. Are you sure you want to continue?
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):

或者,您可以使用此脚本(或其想法)构建自己的调用: Get-Choice.ps1 - Displays PowerShell style menu and gets a user choice