讀取XML文檔的Demo

讀取/修改/刪除 XML文檔的Demo

using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;

namespace XMLApp
{
    class clsXML
    {
        private static string _fileName;

        private static int id;
        private static string name;
        private static string title;
        private static string author;

        private static XmlDocument xmlDoc = null;
        private static XmlNamespaceManager nsmgr = null;
        private static XmlNode rootNode = null;

        public static int ID
        {
            get { return id; }
            set { id = value; }
        }

        public static string Name
        {
            get { return name; }
            set { name = value; }
        }

        public static string Title
        {
            get { return title; }
            set { title = value; }
        }

        public static string Author
        {
            get { return author; }
            set { author = value; }
        }

        public static void OpenXmlFile(string fileName)
        {
            _fileName = fileName;

            if (xmlDoc == null)
            {
                xmlDoc = new XmlDocument();
                xmlDoc.Load(fileName);                

                //nsmgr = new XmlNamespaceManager(xmlDoc.NameTable);
                //nsmgr.AddNamespace("myXml", "http://www.publishing.com");

                rootNode = xmlDoc.DocumentElement; //SelectSingleNode("//myXml:book", nsmgr);
            }
        }

        public static void LocateXmlRecord(int id)
        {
            if (xmlDoc != null)
            {

                XmlNode node = xmlDoc.SelectSingleNode("Company/Department/Books/book[@id='"+id.ToString()+"']");

                if (node != null)
                {
                    //id = (int)node["id"].InnerText;
                    name = node["Name"].InnerText;

                    title = node["Title"].InnerText;
                    author = node["Author"].InnerText;
                }                
            }
        }

        public static void ModifyXmlRecord(int id)
        {
            if (xmlDoc != null)
            {                
                XmlNode node = xmlDoc.SelectSingleNode("Company/Department/Books/book[@id='" + id.ToString() + "']");

                if (node != null)
                {
                    node["Name"].InnerText = "testName";
                    node["Title"].InnerText = "testTitle";
                    node["Author"].InnerText = "testAuthor";

                    xmlDoc.Save(_fileName);
                }
            }
        }

        public static void DeleteXmlRecord(int id)
        {
            if (xmlDoc != null)
            {
                XmlNode fNode = xmlDoc.SelectSingleNode("Company/Department/Books");
                XmlNode node = xmlDoc.SelectSingleNode("Company/Department/Books/book[@id='" + id.ToString() + "']");

                if (node != null)
                {
                    fNode.RemoveChild(node);
                    
                }

                xmlDoc.Save(_fileName);

            }
        }


        //public static void DeleteXmlRecord(int id)
        //{
        //    if (xmlDoc != null)
        //    {
        //        XmlNode fNode = xmlDoc.SelectSingleNode("Company/Department/Books");
        //        XmlNode node = xmlDoc.SelectSingleNode("Company/Department/Books/book[@id='" + id.ToString() + "']");

        //        if (node != null)
        //        {
        //            fNode.RemoveChild(node);
        //        }

        //        xmlDoc.Save(_fileName);

        //    }
        //}

    }
}

XML文件如下：

<?xml version="1.0" encoding="UTF-8"?>
<Company>
  <Department id="101">
    <Department_Name>Cai WuBu</Department_Name>
    <Manager>Zhang Bin</Manager>
    <Books>
      <book id="1">
        <Name>testName1</Name>
        <Title>testTitle1</Title>
        <Author>testAuthor1</Author>
      </book>
      <book id="2">
        <Name>testName</Name>
        <Title>testTitle</Title>
        <Author>testAuthor</Author>
      </book>
      <book id="3">
        <Name>book3</Name>
        <Title>333333</Title>
        <Author>DinoFung</Author>
      </book>
    </Books>
  </Department>
</Company>