C#中如何用“:”（冒号）合并父元素和子元素

Question

输入 Xml：

<title>Discourse interaction between <italic>The New York Times</italic> and <italic>China Daily</italic></title> <subtitle>The case of Google&#x0027;s departure</subtitle>

必填 Output：

Discourse interaction between The New York Times and China Daily: The case of Google's departure

我的代码：

String x = xml.Element("title").Value.Trim(); 

现在我得到：

Discourse interaction between The New York Times and China Daily:

Answer 1

<subtitle>不是<title>的子元素，它是兄弟元素。 您可以通过使用缩进格式化包含元素xml来看到这一点：

<someOuterElementNotShown>
  <title>Discourse interaction between <italic>The New York Times</italic> and <italic>China Daily</italic></title>
  <subtitle>The case of Google's departure</subtitle>
</someOuterElementNotShown>

要获取给定元素之后的同级元素，请使用ElementsAfterSelf() ：

var title = xml.Element("title"); // Add some null check here?
var subtitles = string.Concat(title.ElementsAfterSelf().TakeWhile(e => e.Name == "subtitle").Select(e => e.Value)).Trim();

var x = subtitles.Length > 0 ? string.Format("{0}: {1}", title.Value.Trim(), subtitles) : xml.Value.Trim();

演示小提琴在这里。