Asp.Net读写XML简单方法

<?xml version="1.0" encoding="utf-8"?>
<book>
<title>webapi入门</title>
<author>李白</author>
<price>100</price>
</book>

//读取xml
XmlDocument xdoc = new XmlDocument();
xdoc.Load(Server.MapPath("/App_Data/data.xml"));
XmlElement root = xdoc.DocumentElement;   //获取根节点
Response.Write(root.GetElementsByTagName("price")[0].InnerText);

//写入xml
XmlDocument xdoc = new XmlDocument();
xdoc.Load(Server.MapPath("/App_Data/data.xml"));
XmlElement root = xdoc.DocumentElement;   //获取根节点
root.GetElementsByTagName("price")[0].InnerText = "200";
xdoc.Save(Server.MapPath("/App_Data/data.xml"));