1
            
        
         晓梅
            
        
         60
          
         
           
        
         2
            
        
         小骆
            
        
         34
          
         
           
        
         3
            
        
         莫离
            
        
         110
          
       
      

using System;/// 
///Vote 的摘要说明/// 
public class VoteInfo{    // 1, Attributes    /// 
    ///  图书名称    /// 
    string _belong;    /// 
    /// 编号    /// 
    string _id;    /// 
    /// 作者    /// 
    string _name;    /// 
    /// 书本数量    /// 
    string _number;    // 2, Struct    public VoteInfo(string belong, string id,string name, string number)    {        this._belong = belong;        this._id = id;        this._name = name;        this._number = number;    }    public VoteInfo()    {    }    //封装字段    public string Belong    {        get { return _belong; }        set { _belong = value; }    }    public string Id    {        get { return _id; }        set { _id = value; }    }    public string Name    {        get { return _name; }        set { _name = value; }    }    public string Number    {        get { return _number; }        set { _number = value; }    }}

using System;using System.Xml;public partial class DemoXML : System.Web.UI.Page{       /// 
    /// ylb:1, 遍历xml文档    /// 
    private void BianLi()    {             //提取xml文档        XmlDocument xd = new XmlDocument();        xd.Load(Server.MapPath("Vote.xml"));        //获取根节点        XmlNode root = xd.DocumentElement;        //获取节点列表        XmlNodeList items = root.ChildNodes;        //遍历item项        Response.Write("
");        foreach (XmlNode item in items)        {             //输出属性            Response.Write(item.Attributes["belong"].Name+"="+item.Attributes["belong"].InnerText+"\t");            //输出子节点            foreach (XmlNode p in item)            {                Response.Write(p.Name+"="+p.InnerText+"\t");            }            Response.Write("\n");        }        Response.Write("
");    }    /// 
    /// ylb:2, 添加    /// 
    ///     private void Add(VoteInfo item)    {         //提取xml文档        XmlDocument xd = new XmlDocument();        xd.Load(Server.MapPath("Vote.xml"));        //获取根节点        XmlNode root = xd.DocumentElement;        //创建元素        XmlElement newItem = xd.CreateElement("item");        XmlElement newID = xd.CreateElement("id");        XmlElement newName = xd.CreateElement("name");        XmlElement newNumber = xd.CreateElement("number");        //配参        newItem.SetAttribute("belong", item.Belong);    //设置属性        newID.InnerText = item.Id;  //设置内容        newName.InnerText = item.Name;        newNumber.InnerText = item.Number;        //装配，实现其组织结构        root.AppendChild(newItem);        newItem.AppendChild(newID);        newItem.AppendChild(newName);        newItem.AppendChild(newNumber);        //保存xml文档        xd.Save(Server.MapPath("Vote.xml"));            }    /// 
    /// ylb:3, 修改一项    /// 
    ///     private void Update(VoteInfo vote)    {        //提取xml文档        XmlDocument xd = new XmlDocument();        xd.Load(Server.MapPath("Vote.xml"));        //获取根节点        XmlNode root = xd.DocumentElement;        //获取节点类表        XmlNodeList items = root.ChildNodes;        //循环节点        foreach (XmlNode item in items)        {            //再循环节点            foreach (XmlNode p in item)            {                if (p.Name == "id" && p.InnerText == vote.Id)                {                    //则修改这一项                    //重设belong的值                    item.Attributes["belong"].InnerText = vote.Belong;                    //((XmlElement)item).SetAttribute("belong", vote.Belong);                    //给该节点（id）下的节点赋值                    p.NextSibling.InnerText = vote.Name;                    p.NextSibling.NextSibling.InnerText = vote.Number;                }            }        }        //保存xml文档        xd.Save(Server.MapPath("Vote.xml"));    }    /// 
    /// ylb:4, 删除一项    /// 
    ///     private void Delete(string id)    {         //提取xml文档        XmlDocument xd = new XmlDocument();        xd.Load(Server.MapPath("vote.xml"));        //获取根节点        XmlNode root = xd.DocumentElement;        //获取节点列表        XmlNodeList items = root.ChildNodes;        //循环节点        foreach (XmlNode item in items)        {            foreach (XmlNode p in item)            {                if (p.Name == "id" && p.InnerText == id)                {                     //移除该项                    root.RemoveChild(item);                                    }            }        }        //保存xml文档        xd.Save(Server.MapPath("Vote.xml"));    }    protected void Page_Load(object sender, EventArgs e)    {        //调用展示        //ylb: 2,        VoteInfo item = new VoteInfo("袁博自传", "4", "ylb", "100");        //Add(item);        //ylb: 3, 根据id=3，修改 belong="天涯" name="莫离",number=110        VoteInfo item2 = new VoteInfo("天涯", "3", "莫离", "110");        //Update(item2);        //ylb: 4, 删除id=4的项        Delete("3");        //ylb: 1, 遍历Xml文档        //BianLi();    }}