在XmlDocument上使用Save()时渲染空的XML元素,如<this />,而不是<this> </ this>

using System;
using System.Xml;

public class Program
{
    public static void Main()
    {
        // 创建XmlDocument对象
        XmlDocument xmlDoc = new XmlDocument();

        // 创建根节点
        XmlElement rootElement = xmlDoc.CreateElement("root");

        // 创建空的XML元素
        XmlElement emptyElement = xmlDoc.CreateElement("empty");

        // 将空的XML元素添加到根节点
        rootElement.AppendChild(emptyElement);

        // 将根节点添加到XmlDocument
        xmlDoc.AppendChild(rootElement);

        // 创建XmlWriterSettings对象
        XmlWriterSettings settings = new XmlWriterSettings();
        settings.OmitXmlDeclaration = true;
        settings.ConformanceLevel = ConformanceLevel.Fragment;

        // 使用XmlWriterSettings创建XmlWriter
        XmlWriter writer = XmlWriter.Create(Console.Out, settings);

        // 保存XmlDocument到XmlWriter
        xmlDoc.Save(writer);

        // 关闭XmlWriter
        writer.Close();
    }
}

<root><empty /></root>