- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Drawing;
- using System.Text;
- using System.Windows.Forms;
- using System.Xml;
- namespace XMLDOMDemo
- {
- public partial class Form1 : Form
- {
- public Form1()
- {
- InitializeComponent();
- }
- private void btnLoad_Click(object sender, EventArgs e)
- {
- XmlDocument xmlDoc = new XmlDocument();
- xmlDoc.Load("Books.xml");
- MessageBox.Show(xmlDoc.InnerXml);
- }
- //创建文档
- private void btnCreate_Click(object sender, EventArgs e)
- {
- XmlDocument xmlDoc = new XmlDocument();
- //建立Xml的定义声明
- XmlDeclaration dec = xmlDoc.CreateXmlDeclaration("1.0", "GB2312", null);
- xmlDoc.AppendChild(dec);
- //创建根节点
- XmlElement root = xmlDoc.CreateElement("Books");
- xmlDoc.AppendChild(root);
- XmlNode book = xmlDoc.CreateElement("Book");
- XmlElement title = xmlDoc.CreateElement("Title");
- title.InnerText = "SQL Server";
- book.AppendChild(title);
- XmlElement isbn = xmlDoc.CreateElement("ISBN");
- isbn.InnerText = "444444";
- book.AppendChild(isbn);
- XmlElement author = xmlDoc.CreateElement("Author");
- author.InnerText = "jia";
- book.AppendChild(author);
- XmlElement price = xmlDoc.CreateElement("Price");
- price.InnerText = "120";
- price.SetAttribute("Unit", "___FCKpd___0quot;);
- book.AppendChild(price);
- root.AppendChild(book);
- xmlDoc.Save("Books.xml");
- }
- private void btnInsert_Click(object sender, EventArgs e)
- {
- XmlDocument xmlDoc = new XmlDocument();
- xmlDoc.Load("Books.xml");
- XmlNode root = xmlDoc.SelectSingleNode("Books");
- XmlElement book = xmlDoc.CreateElement("Book");
- XmlElement title = xmlDoc.CreateElement("Title");
- title.InnerText = "XML";
- book.AppendChild(title);
- XmlElement isbn = xmlDoc.CreateElement("ISBN");
- isbn.InnerText = "333333";
- book.AppendChild(isbn);
- XmlElement author = xmlDoc.CreateElement("Author");
- author.InnerText = "snow";
- book.AppendChild(author);
- XmlElement price = xmlDoc.CreateElement("Price");
- price.InnerText = "120";
- price.SetAttribute("Unit", "___FCKpd___0quot;);
- book.AppendChild(price);
- root.AppendChild(book);
- xmlDoc.Save("Books.xml");
- MessageBox.Show("数据已写入!");
- }
- private void btnUpdate_Click(object sender, EventArgs e)
- {
- XmlDocument xmlDoc = new XmlDocument();
- xmlDoc.Load("Books.xml");
- //"//Book[@Unit=\"$\"]"
- //获取Books节点的所有子节点
- XmlNodeList nodeList = xmlDoc.SelectSingleNode("Books//Book").ChildNodes;
- //遍历所有子节点
- foreach (XmlNode xn in nodeList)
- {
- //将子节点类型转换为XmlElement类型
- XmlElement xe = (XmlElement)xn;
- if (xe.Name == "Author")
- {
- xe.InnerText = "amandag";
- }
- if (xe.GetAttribute("Unit") == "___FCKpd___0quot;)
- {
- xe.SetAttribute("Unit", "¥");
- }
- //break;
- }
- //XmlNodeList nodeList = xmlDoc.SelectNodes("Books//Book");
- //foreach (XmlNode xn in nodeList)
- //{
- // foreach (XmlNode x in xn.ChildNodes)
- // {
- // //将子节点类型转换为XmlElement类型
- // XmlElement xe = (XmlElement)x;
- // if (xe.Name == "Author")
- // {
- // xe.InnerText = "amandag";
- // }
- // if (xe.GetAttribute("Unit") == "___FCKpd___0quot;)
- // {
- // xe.SetAttribute("Unit", "¥");
- // }
- // //break;
- // }
- //}
- xmlDoc.Save("Books.xml");
- }
- private void btnDelete_Click(object sender, EventArgs e)
- {
- XmlDocument xmlDoc = new XmlDocument();
- xmlDoc.Load("Books.xml");
- XmlNodeList nodeList = xmlDoc.SelectSingleNode("Books//Book").ChildNodes;
- //遍历所有子节点
- foreach (XmlNode xn in nodeList)
- {
- //将子节点类型转换为XmlElement类型
- XmlElement xe = (XmlElement)xn;
- if (xe.Name == "Author")
- {
- xe.RemoveAll();
- }
- if (xe.GetAttribute("Unit") == "¥")
- {
- xe.RemoveAttribute("Unit");
- }
- }
- xmlDoc.Save("Books.xml");
- }
- }
- }