问题描述
我有以下XML文档:
<?xml version="1.0" encoding="UTF-8"?>
<FamilyTree>
<Parent name="Ken">
<Child name="Lorna">
<Grandchild name="Andrew"/>
<Grandchild name="Brian"/>
</Child>
<Child name="Mike">
<Grandchild name="Ann"/>
<Grandchild name="Beth"/>
</Child>
</Parent>
<Parent name="Norma">
<Child name="Owen">
<Grandchild name="Charles"/>
</Child>
<Child name="Peter">
<Grandchild name="Charlotte"/>
</Child>
</Parent>
<Parent name="Quinn">
<Child name="Robert">
<Grandchild name="Debbie"/>
<Grandchild name="Eric"/>
</Child>
<Child name="Susan">
<Grandchild name="Frank"/>
</Child>
</Parent>
<Parent name="Tom">
<Child name="Ursula">
<Grandchild name="George"/>
<Grandchild name="Harriet"/>
</Child>
<Child name="Victor">
<Grandchild name="Ian"/>
<Grandchild name="Juliet"/>
</Child>
</Parent>
</FamilyTree>
我正在尝试选择一个拥有至少两个自己的孩子(孙子")的孩子的父母".请注意,我不是在寻找至少有两个孙子"的父母".
I'm trying to select all the "Parents" with a Child who has at least two children ("Grandchild") of his/her own. Note that I'm not looking for "Parents" with at least two "Grandchild[ren]".
以下LINQ查询有效,但我感觉它不是最优雅的.
The following LINQ query works, but I've a feeling it's not the most elegant.
IEnumerable<XElement> parents = (from c in familyTreeElement.Descendants("Child")
where c.Elements().Count() > 1
select c.Parent).Distinct();
是否有更好的方法来指定呢?
Is there a better way to specify this?
推荐答案
啊(2个孙子)编辑帮助了;-p
Ahh the edit (2 grand-children) helps ;-p
虽然XDocument
很有用,但有时我会想念XPath/XQuery.使用XmlDocument
,您可以只使用doc.DocumentElement.SelectNodes("Parent[Child/Grandchild[2]]")
.
While XDocument
is useful, at times I miss XPath/XQuery. With XmlDocument
you could just use doc.DocumentElement.SelectNodes("Parent[Child/Grandchild[2]]")
.
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