是否在类型值上创建XPath筛选?

您可以解决相关问题 instance 具有如下XPath表达式的节点:

//class[@type = 'I want to filter on whatever value this is']/instance

$xml |Select-Xml -XPath "//class[@type = 'I want to filter on whatever value this is']/instance" |ForEach-Object { 
  [pscustomobject]@{
    QuestionSetName = ($_.Node |Select-Xml "./property[@name='QuestionSetName']").Node.InnerText
    Ratio           = ($_.Node |Select-Xml "./property[@name='Ratio']").Node.InnerText
  }
}

如果你有很多 <property /> 要为每个元素枚举的元素 <instance />

$propertyNames = 'QuestionSetName','Ratio','Size','SomeOtherProperty'

$xml |Select-Xml -XPath "//class[@type = 'I want to filter on whatever value this is']/instance" |ForEach-Object { 
  $properties = [ordered]@{}
  foreach($name in $propertyNames){
    $properties[$name] = ($_.Node |Select-Xml "./property[@name='${name}']").Node.InnerText
  }

  [pscustomobject]$properties
}