C#写XML的简单例子

这个例子要把bookstore.xml文件增加一条book记录
1 bookstore.xml
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
  <book genre="love" ISBN="1234123">
    <title>who am i </title>
    <author>who</author>
    <price>999</price>
  </book>
</bookstore>
2 bookstore.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
namespace toxml
{
    public class ToXml
    {
        public static void Main(string[] args)
        {
            //实例化一个XmlDocument对象
            XmlDocument xmlDoc = new XmlDocument();
            //实例对象读取要写入的XML文件
            xmlDoc.Load("bookstore.xml");
            //查找<bookstore>
            XmlNode root = xmlDoc.SelectSingleNode("bookstore");
            //创建一个<book>节点
            XmlElement xe1 = xmlDoc.CreateElement("book");
            //设置该节点genre属性
            xe1.SetAttribute("leixing", "music");
            //设置该节点ISBN属性   
            xe1.SetAttribute("ISBN", "56756");