使用C#更改XML文件中的节点名称

<root>
  <oldNode>
   <childNode>Hello, World!</childNode>
  </oldNode>
</root>

using System;
using System.IO;
using System.Xml;

class Program
{
    static void Main(string[] args)
    {
        string inputFile = "input.xml";
        string outputFile = "output.xml";

        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.Load(inputFile);

        XmlNode oldNode = xmlDoc.SelectSingleNode("//oldNode");
        XmlNode newNode = xmlDoc.CreateElement("newNode");

        foreach (XmlNode childNode in oldNode.ChildNodes)
        {
            newNode.AppendChild(childNode);
        }

        oldNode.ParentNode.ReplaceChild(newNode, oldNode);

        xmlDoc.Save(outputFile);

        Console.WriteLine("Node name has been changed from 'oldNode' to 'newNode'.");
    }
}

<root>
  <newNode>
   <childNode>Hello, World!</childNode>
  </newNode>
</root>