在C#中用Linq实现XML数据的提取

using System;
using System.Linq;
using System.Xml.Linq;

class Program
{
    static void Main()
    {
        // 加载XML文档
        XDocument doc = XDocument.Load("data.xml");

        // 使用Linq查询语法提取数据
        var result = from element in doc.Descendants("book")
                     where (string)element.Element("author") == "John Doe"
                     select new
                     {
                         Title = (string)element.Element("title"),
                         Genre = (string)element.Element("genre"),
                         Price = (decimal)element.Element("price")
                     };

        // 遍历查询结果并输出
        foreach (var book in result)
        {
            Console.WriteLine("Title: " + book.Title);
            Console.WriteLine("Genre: " + book.Genre);
            Console.WriteLine("Price: " + book.Price);
            Console.WriteLine();
        }
    }
}