using System.Xml;
using System.Xml.Schema;

public static bool ValidateXmlWithXsd(string xmlPath, string xsdPath)
{
    try
    {
        XmlReaderSettings settings = new XmlReaderSettings();
        settings.Schemas.Add(null, xsdPath);
        settings.ValidationType = ValidationType.Schema;
        
        // 设置验证事件处理程序
        settings.ValidationEventHandler += (sender, args) => 
        {
            throw new XmlSchemaValidationException($"验证错误: {args.Message}");
        };
        
        using (XmlReader reader = XmlReader.Create(xmlPath, settings))
        {
            while (reader.Read()) { } // 读取整个文档以触发验证
        }
        return true;
    }
    catch (XmlSchemaValidationException)
    {
        return false;
    }
}

public static bool ValidateXmlWithDtd(string xmlPath)
{
    try
    {
        XmlReaderSettings settings = new XmlReaderSettings();
        settings.DtdProcessing = DtdProcessing.Parse;
        settings.ValidationType = ValidationType.DTD;
        
        settings.ValidationEventHandler += (sender, args) => 
        {
            throw new XmlException($"DTD验证错误: {args.Message}");
        };
        
        using (XmlReader reader = XmlReader.Create(xmlPath, settings))
        {
            while (reader.Read()) { }
        }
        return true;
    }
    catch (XmlException)
    {
        return false;
    }
}

using System.Xml;

public static void ReadXmlWithXmlDocument(string xmlPath)
{
    XmlDocument doc = new XmlDocument();
    doc.Load(xmlPath);
    
    // 读取根节点
    XmlNode root = doc.DocumentElement;
    
    // 遍历子节点
    foreach (XmlNode node in root.ChildNodes)
    {
        Console.WriteLine($"节点名: {node.Name}, 值: {node.InnerText}");
    }
}

using System.Xml.Linq;

public static void ReadXmlWithXDocument(string xmlPath)
{
    XDocument doc = XDocument.Load(xmlPath);
    
    // 查询所有元素
    var elements = from el in doc.Descendants()
                   select el;
    
    foreach (XElement el in elements)
    {
        Console.WriteLine($"元素名: {el.Name}, 值: {el.Value}");
    }
}

using System.Xml;

public static void ReadXmlWithXmlReader(string xmlPath)
{
    using (XmlReader reader = XmlReader.Create(xmlPath))
    {
        while (reader.Read())
        {
            if (reader.NodeType == XmlNodeType.Element)
            {
                Console.WriteLine($"元素: {reader.Name}");
                if (reader.HasAttributes)
                {
                    while (reader.MoveToNextAttribute())
                    {
                        Console.WriteLine($"属性: {reader.Name}={reader.Value}");
                    }
                }
            }
        }
    }
}