[英]Xml.Linq: Reversing child-nodes of a XML
I have the following XML file created in runtime as per user input.我根据用户输入在运行时创建了以下 XML 文件。
<Parent>
<X1>1</X1>
<X2>
<Y1>
<Rank>4</Rank>
</Y1>
<Y1>
<Rank>3</Rank>
</Y1>
<Y1>
<Rank>2</Rank>
</Y1>
<Y1>
<Rank>1</Rank>
</Y1>
</X2>
</Parent>
Now, I want to reverse the child node such a way <Rank>
arranged in ascending order.现在,我想以
<Rank>
升序排列的方式反转子节点。 I want the following output我想要以下输出
<Parent>
<X1>1</X1>
<X2>
<Y1>
<Rank>1</Rank>
</Y1>
<Y1>
<Rank>2</Rank>
</Y1>
<Y1>
<Rank>3</Rank>
</Y1>
<Y1>
<Rank>4</Rank>
</Y1>
</X2>
</Parent>
This problem is created because I am using the AddFirst method.创建此问题是因为我使用的是 AddFirst 方法。 I didn't find any method which is exact opposite of AddFirst.
我没有找到任何与 AddFirst 完全相反的方法。
Example:例子:
static void Main(string[] args)
{
XElement srcTree = new XElement("Parent",
new XElement("X1", 1),
new XElement("X2",
new XElement("Y1", new XElement("Rank", 4)),
new XElement("Y1", new XElement("Rank", 3)),
new XElement("Y1", new XElement("Rank", 2)),
new XElement("Y1", new XElement("Rank", 1)))
);
var reverseList = srcTree.Elements("X2").Descendants("Y1").InDocumentOrder().Reverse().ToList();
srcTree.Element("X2").Remove();
srcTree.Add(new XElement("X2", reverseList));
Console.WriteLine(srcTree);
Console.ReadLine();
}
It will give you desired result:它会给你想要的结果:
<Parent>
<X1>1</X1>
<X2>
<Y1>
<Rank>1</Rank>
</Y1>
<Y1>
<Rank>2</Rank>
</Y1>
<Y1>
<Rank>3</Rank>
</Y1>
<Y1>
<Rank>4</Rank>
</Y1>
</X2>
</Parent>
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