如何保持 psobjects 有序？

Question

我有以下脚本，它从另一个脚本中获取对象并将其转换为 pscustomobject

& ".\script1.ps1" -ViewConnection "$cinput" -OutVariable xprtOut | Format-Table -Wrap

#converting xprtOut from Arraylist to pscustomobject to be used with ConvertTo-HTMLTable
$Arr = @()
foreach ($Object in $xprtOut) {
    $i = -1
    $arrayListCount = -($Object | gm | Where-Object {$_.MemberType -like "noteproperty"}).Count

    $customObj = New-Object PSCustomObject
    do {
        $customObj | Add-Member -MemberType NoteProperty -Name (($Object | gm)[$($i)].Name) -Value ($Object."$(($Object | gm)[$($i)].Name)")
        $i--
    } while ($i -ge $arrayListCount)

    $Arr += $customObj
}

效果很好，但我注意到对象的顺序发生了变化。 如何保留函数中的顺序？

我在这里尝试答案：https://stackoverflow.com/a/42300930/8397835

$Arr += [pscustomobject]$customObj

但这不起作用。我尝试将演员表放在函数的其他位置并给出错误。

ordered 属性只能在散列文字节点上指定。

我想我不确定我应该将[ordered] 或[pscutomobject] 放在函数中的什么位置，因为在我的情况下我没有@ 符号

Answer 1

这个问题（如我所见）都是关于复制对象属性同时保持属性顺序到位。
Get-Member (gm) cmdlet 不会保持在输入对象中设置属性的顺序，但会遍历 PSObject.Properties。

对于 PowerShell 3.0 及更高版本：

$Arr = foreach ($Object in $xprtOut) {
    # create an empty PSCustomObject
    $copy = [PSCustomObject]::new()
    # loop through the properties in order and add them to $copy object
    $Object.PSObject.Properties | ForEach-Object { 
        $copy | Add-Member -MemberType NoteProperty -Name $_.Name -Value $_.Value
    }
    # emit the copied object so it adds to the $Arr array
    $copy
}

如果您的 PowerShell

$Arr = foreach ($Object in $xprtOut) {
    # create an ordered dictionary object
    $copy = New-Object System.Collections.Specialized.OrderedDictionary
    # loop through the properties in order and add them to the ordered hash
    $Object.PSObject.Properties | ForEach-Object { 
        $copy.Add($_.Name, $_.Value)   # or use: $copy[$($_.Name)] = $_.Value
    }
    # emit a PSObject with the properties ordered, so it adds to the $Arr array
    New-Object PSObject -Property $copy
}