XML

图解

 

1.代码案例

  public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void tvList_AfterSelect(object sender, TreeViewEventArgs e)
        {

        }

        private TreeNode root;
        private void Form1_Load(object sender, EventArgs e)
        {

            //如何填充数据
            //每一个节点都是什么类型？ what type is it?
            //what's the type of TreeView Control every Node?
            //解析：TreeNode
            //游离的结合，和tvList控件没有半毛钱关系   
            root=new TreeNode("全国");
            //why we can't see the whole world?
            //ImageList 与TreeView关联
            tvList.ImageList = imgList;
            root.ImageIndex = 0;
            tvList.Nodes.Add(root);
        }
        private void btnAdd_Click(object sender, EventArgs e)
        {
            //1.1 在内存中构建出一个节点对象
            TreeNode tn=new TreeNode(txtName.Text);
            //1.2 将子节点绑定到指定的全国节点下
            //如何获取用户选中的节点
            TreeNode selectNode=tvList.SelectedNode;
            selectNode.Nodes.Add(tn);
        }

        private void btnDel_Click(object sender, EventArgs e)
        {
            TreeNode selectNode = tvList.SelectedNode;
            selectNode.Remove();
        }





///////////////////////////////////////
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace FrmMain
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void tvList_AfterSelect(object sender, TreeViewEventArgs e)
        {

        }
        private TreeNode root;
        private void Form1_Load(object sender, EventArgs e)
        {

            //如何填充数据
            //每一个节点都是什么类型？ what type is it?
            //what's the type of TreeView Control every Node?
            //解析：TreeNode
            //游离的结合，和tvList控件没有半毛钱关系  
            root = new TreeNode("父节点");
            root.ImageIndex = 0;
            tvList.Nodes.Add(root);
        }

        private void btnAdd_Click(object sender, EventArgs e)
        {
            TreeNode tn = new TreeNode(textBox1.Text);
            TreeNode selectNode = tvList.SelectedNode;
            selectNode.Nodes.Add(tn);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            TreeNode selectNode = tvList.SelectedNode;
            selectNode.Remove();
        }
    }
}
///////////////////////////////////
<?xml version="1.0" encoding="utf-8" ?>
<Books>
  <book id="001">
    <name>假如生活期骗了你</name>
    <price>50</price>
    <publisher>北京大学出版社</publisher>
  </book>
  <book id="002">
    <name>假如生活欺骗了你</name>
    <price>10</price>
    <publisher>清华大学出版社</publisher>
  </book>
  <book id="003">
    <name>我与地坛史铁生</name>
    <price>50</price>
    <publisher>北大青鸟出版社</publisher>
  </book>
</Books>
//////////////////////////////
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;


namespace Day08_我的xml项目
{
    class Program
    {
        static void Main(string[] args)
        {
            #region 解析xml文件
            //我们需要将硬盘上名称为Happy.xml文件中的数据搁到内存,微软提供了  对应的操作类
            //1.1文档对象创建  有内容里
            XmlDocument doc = new XmlDocument();
            //创建对象的目录,就是为了用他的方法
            //1.2用Load方法加载xml文件,幻化成内存中的数据,赋值给doc对象
            doc.Load("Happy.xml");
            //1.3获取整篇文档  根节点   root
            XmlNode root = doc.DocumentElement;
            //1.4根据  根节点  获取子节点数据
            foreach (XmlNode  item in root.ChildNodes )
            {
                //一个item代表一本书
                foreach (XmlNode  chid in item.ChildNodes )
                {
                    //一个child代表一个图书的属性
                    string name = chid.InnerText;
                    Console.WriteLine(name);
                }
            }
            Console.ReadLine();



            #endregion
        }
    }
}