[System.Collections.ArrayList]::

截屏2021-07-28 20.12.23.png

原代码：

Function ServicesList
{
    $services_list = [System.Collections.ArrayList]::new()

    Foreach($i in $Services)
    {
        try
        {
            $var1 = Get-Service -Name $i -ErrorAction Stop | Select-Object -ExpandProperty "Name"
            $services_list.add($var1)  # <----
        }
        catch
        {
            # Continue
            Write-Host -ForegroundColor Red "[!] " -NoNewline
            Write-Host "Service " -NoNewline
            Write-Host -ForegroundColor Cyan $i -NoNewline
            Write-Host " not found. Skip"
        }
    }

    # Write-Host $services_list
    return $services_list
}

$services_list 的结果包含 0...20 这些代表值 index 的数字，这是结果之外的。

看了几遍官方文档，赣，丢了 [void]。

[void]$services_list.add($var1)

也可以使用 Generic List 文档

[System.Collections.Generic.List[string]]::new()

修正后：

Function ServicesList
{
    $services_list = [System.Collections.ArrayList]::new()

    Foreach($i in $Services)
    {
        # $services_list = [System.Collections.Generic.List[string]]::new()
        try
        {
            $var1 = Get-Service -Name $i -ErrorAction Stop | Select-Object -ExpandProperty "Name"
            [void]$services_list.add($var1)  # <----
        }
        catch
        {
            # Continue
            Write-Host -ForegroundColor Red "[!] " -NoNewline
            Write-Host "Service " -NoNewline
            Write-Host -ForegroundColor Cyan $i -NoNewline
            Write-Host " not found. Skip"
        }
    }

    #Write-Host $services_list
    return $services_list
}

截屏2021-07-28 20.11.34.png