将具有不匹配属性的对象数组转换为 csv

Question

简而言之，如何转换这个

$al = New-Object System.Collections.ArrayList

$al+=[PSCustomObject]@{prop1="value1"; prop2="value2"}
$al+=[PSCustomObject]@{prop1="value11"; prop3="value33"}
$al+=[PSCustomObject]@{prop4="value444"}

进入这个

Answer 1

使用psobject隐藏成员集在导出前发现所有属性名称：

$propertyNames = $al |ForEach-Object {
  # Discover all the object's properties
  $_.psobject.Properties |ForEach-Object {
    # Get each property name
    $_.Name
  }
} |Sort-Object -Unique

# Now the CSV will have a column for every single unique property name
$al |Select-Object $propertyNames |Export-Csv -Path $Path1 -NoTypeInformation