PSObject -属性有条件

Question

我想在我的这部分代码中加入条件：

$objInfos = New-Object PSObject -Property @{
                    Dossier = [string]"$($logs[0])"
                    "Taille totale" = [double]$logs[1]
                    "Categorie recherchee" = [double]$logs[2]
                    "Pourcentage" = [double]$logs[3]
                    "Date de dernier acces" = [DateTime]"$($logs[5])"
}

我需要每个案例都有条件，例如：

$objInfos = New-Object PSObject -Property @{
                    if ($test -eq 1){
                        Dossier = [string]"$($logs[0])"
                    }
                    "Taille totale" = [double]$logs[1]
                    "Categorie recherchee" = [double]$logs[2]
                    "Pourcentage" = [double]$logs[3]
                    "Date de dernier acces" = [DateTime]"$($logs[5])"
}

这个方法我试过了，没用

Missing '=' operator after key in hash literal.

有人知道怎么做吗？

Answer 1

您可以在单独的语句中创建 Hashtable，用值填充它，然后将其传递给 New-Object cmdlet。

$Hashtable = @{}
if ($test -eq 1){
    $Hashtable.Add('Dossier', [string]"$($logs[0])")
}
$Hashtable.Add("Taille totale", [double]$logs[1])
$Hashtable.Add("Categorie recherchee", [double]$logs[2])
$Hashtable.Add("Pourcentage", [double]$logs[3])
$Hashtable.Add("Date de dernier acces", [DateTime]"$($logs[5])")
$objInfos = New-Object PSObject -Property $Hashtable

如果您希望属性的顺序与添加到 Hashtable 的元素的顺序相同，则需要使用 OrderedDictionary 而不是 Hashtable:

$Hashtable = New-Object System.Collections.Specialized.OrderedDictionary

Answer 2

您可以按照的建议有条件地将条目添加到属性哈希表：

$props = @{
  'Taille totale'         = [double]$logs[1]
  'Categorie recherchee'  = [double]$logs[2]
  'Pourcentage'           = [double]$logs[3]
  'Date de dernier acces' = [DateTime]$logs[5]
}

if ($test -eq 1) {
  $props['Dossier'] = "$($logs[0])"
}

$objInfos = New-Object PSObject -Property $props

您可以使用 Add-Member 作为 @arco444 在您的问题的评论中建议的：

$objInfos = New-Object PSObject -Property @{
  'Taille totale'         = [double]$logs[1]
  'Categorie recherchee'  = [double]$logs[2]
  'Pourcentage'           = [double]$logs[3]
  'Date de dernier acces' = [DateTime]$logs[5]
}

if ($test -eq 1) {
  $objInfos | Add-Member -Type NoteProperty -Name 'Dossier' -Value "$($logs[0])"
}

或者您可以添加属性无论如何，但根据您的检查结果设置其值：

$objInfos = New-Object PSObject -Property @{
  'Dossier'               = if ($test -eq 1) {"$($logs[0])"} else {''}
  'Taille totale'         = [double]$logs[1]
  'Categorie recherchee'  = [double]$logs[2]
  'Pourcentage'           = [double]$logs[3]
  'Date de dernier acces' = [DateTime]$logs[5]
}

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