xml

来源：互联网发布：macbook强制卸载软件编辑：程序博客网时间：2024/06/08 15:10

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Xml;

namespace WindowsFormsApplication1
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            ////第一步；声明文档对象
            //XmlDocument doc = new XmlDocument();
            ////XmlDocument doc = new XmlDocument();
            ////XmlDocument doc = new XmlDocument();
            ////第二步；加载XML文件
            //doc.Load("..//..//XMLFile1.xml");
            ////doc.Load("../../XMLFile1.xml");
            ////获取XML文件的根节点
            ////XmlNode node = doc.DocumentElement;
            //XmlElement element = doc.DocumentElement;
            ////XmlElement element = doc.DocumentElement;
            ////接收子节点集合
            //XmlNodeList nodelist = element.ChildNodes;
            ////XmlNodeList nodelist = element.ChildNodes;
            ////MessageBox.Show(nodelist[0].Attributes["id"].Value);//第0个子节点属性“id”的值

//MessageBox.Show("书名称："+nodelist[0].ChildNodes[0].ChildNodes[0].Value+" 价格："+nodelist[0].ChildNodes[1].ChildNodes[0].Value);

            XmlDocument doc = new XmlDocument();
            doc.Load("..//..//XMLFile1.xml");
            XmlElement element = doc.DocumentElement;
            XmlNodeList nodelist = element.ChildNodes;
            MessageBox.Show("书名称："+nodelist[0].ChildNodes [0].ChildNodes [0].Value +" 价格："+nodelist[0].ChildNodes[1].ChildNodes[0].Value );

}

        private void button2_Click(object sender, EventArgs e)
        {
            //string name = textBox1.Text.Trim();

            //XmlDocument doc = new XmlDocument();
            //doc.Load("..//..//XMLFile1.xml");
            //XmlElement element = doc.DocumentElement;

            //int count = element.ChildNodes.Count;
            //string price="";
            //for (int i = 0; i < count;i++ )
            //{
            //    if (element.ChildNodes[i].ChildNodes[0].ChildNodes[0].Value == name)
            //    {
            //        price = element.ChildNodes[i].ChildNodes[1].ChildNodes[0].Value;
            //        break;
            //    }

            //}
            //MessageBox.Show("name:"+name+"\n"+"price:"+price);

            string price="";
            string name = textBox1.Text.Trim();
            XmlDocument doc = new XmlDocument();
            doc.Load("..//..//XMLFile1.xml");
            XmlElement element = doc.DocumentElement;
            int count = element.ChildNodes.Count;
            for (int i = 0; i < count; i++)
            {
                if (element.ChildNodes[i].ChildNodes[0].ChildNodes[0].Value == name)
                {
                    price = element.ChildNodes[i].ChildNodes[1].ChildNodes[0].Value;
                    break;
                }
            }
            MessageBox.Show("书名："+name +" 价格："+price);

}

        private void Form2_Load(object sender, EventArgs e)
        {

}

        private void button3_Click(object sender, EventArgs e)
        {
            //string name = textBox2.Text.Trim();
            //string price = textBox3.Text.Trim();

//XmlDocument doc = new XmlDocument();
//doc.Load("..//..//XMLFile1.xml");

//XmlElement element = doc.DocumentElement;
//XmlNode nodebook = doc.CreateElement("book");//通过文档对象创建Node节点

            //XmlAttribute attribute = doc.CreateAttribute("id");//创建属性节点
            //attribute.Value = "3";//给属性节点赋值
            //nodebook.Attributes.Append(attribute);//把属性节点添加到book节点中

            //XmlNode nodename = doc.CreateElement("name");
            //nodename.InnerText = name;//设置nodename里面的值
            //nodebook.AppendChild(nodename);//将nodename添加到nodebook节点当中

            //XmlNode nodeprice = doc.CreateElement("price");
            //nodeprice.InnerText = price;//设置nodeprice里面的值
            //nodebook.AppendChild(nodeprice);//将nodeprice添加到nodebook节点当中

            //element.AppendChild(nodebook);//添加到更节点中
            //doc.Save("..//..//XMLFile1.xml");//保存文件
            //MessageBox.Show("添加成功");
            string name = textBox2.Text.Trim();
            string price = textBox3.Text.Trim();
            XmlDocument doc = new XmlDocument();
            doc.Load("..//..//XMLFile1.xml");
            XmlElement element = doc.DocumentElement;
            XmlNode nodebook = doc.CreateElement("book");
            XmlAttribute attribute = doc.CreateAttribute("id");
            attribute.Value = "4";
            nodebook.Attributes.Append(attribute);
            XmlNode nodename = doc.CreateElement("name");
            nodename.InnerText = name;
            nodebook.AppendChild(nodename);
            XmlNode nodeprice = doc.CreateElement("price");
            nodeprice.InnerText = price;
            nodebook.AppendChild(nodeprice);
            element.AppendChild(nodebook);
            doc.Save("..//..//XMLFile1.xml");
            MessageBox.Show("添加成功！！！");
            MessageBox.Show("书名： "+name +"\n"+"价格："+price );
        }

        private void button4_Click(object sender, EventArgs e)
        {
            //string name = textBox2.Text.Trim();
            //string price = textBox3.Text.Trim();
            //XmlDocument doc = new XmlDocument();
            //doc.Load("..//..//XMLFile1.xml");
            //XmlElement element = doc.DocumentElement;
            //XmlNode node = doc.CreateElement("book");
            //XmlAttribute attribute = doc.CreateAttribute("id");
            //attribute.Value = "6";
            //node.Attributes.Append(attribute);
            //node.InnerXml = "<name>" + name + "</name><price>" + price + "</price>";
            //element.AppendChild(node);
            //doc.Save("..//..//XMLFile1.xml");
            //Bind();
            //MessageBox.Show("添加成功");

            string name = textBox2.Text.Trim();
            string price = textBox3.Text.Trim();
            XmlDataDocument doc = new XmlDataDocument();
            doc.Load("..//..//XMLFile1.xml");
            XmlElement element = doc.DocumentElement;
            XmlNode node = doc.CreateElement("book");
            XmlAttribute attribute = doc.CreateAttribute("id");
            attribute.Value = "7";
            node.Attributes.Append(attribute);
            node.InnerXml = "<name>" + name + "</name><price>" + price + "</price>";
            element.AppendChild(node);
            doc.Save("..//..//XMLFile1.xml");
            Bind();
            MessageBox.Show("添加成功");
        }

        private void button5_Click(object sender, EventArgs e)
        {
            Bind();
        }

        private void Bind()
        {
            DataSet ds = new DataSet();
            ds.ReadXml("..//..//XMLFile1.xml");//相对路径读取方法 “..//”表示上级路径的意思
            //ds.ReadXml(AppDomain.CurrentDomain.BaseDirectory.Replace("\\bin\\Debug", "") + "XMLFile1.xml");//绝对路径读法（带盘符的都是绝对路径）
            //MessageBox.Show(AppDomain.CurrentDomain.BaseDirectory.Replace("\\bin\\Debug",""));//AppDomain 应用程序域
            dataGridView1.DataSource = ds.Tables[0].DefaultView;
        }

        private void button6_Click(object sender, EventArgs e)
        {
            //string name = textBox4.Text.Trim();
            //XmlDocument doc = new XmlDocument();
            //doc.Load("..//..//XMLFile1.xml");
            //XmlElement element = doc.DocumentElement;
            //XmlNode node = null;//声明以个全局性的节点
            //int count = element.ChildNodes.Count;
            //for (int i = 0; i < count; i++)
            //{
            //    if (element.ChildNodes[i].ChildNodes[0].InnerText == name)
            //    {
            //        node = element.ChildNodes[i];//给全局性节点赋值
            //        break;
            //    }
            //}
            //element.RemoveChild(node);
            //doc.Save("..//..//XMLFile1.xml");
            //Bind();
            //MessageBox.Show("删除成功");
            string name = textBox4.Text.Trim();
            XmlDocument doc = new XmlDocument();
            doc.Load("..//..//XMLFile1.xml");
            XmlElement element = doc.DocumentElement;
            //XmlNodeList nodelist = null ;
            int count = element.ChildNodes.Count;
            for (int i = 0; i < count; i++)
            {
                XmlNode node = null;
                if (element.ChildNodes[i].ChildNodes[0].ChildNodes[0].Value == name)
                {
                    node = element.ChildNodes[i];
                    element.RemoveChild(node);
                }
            }
            doc.Save("..//..//XMLFile1.xml");
            Bind();
            MessageBox.Show ("删除成功！！！");
        }
    }
}