[XML]XML 文档处理 （未完待续）

XML

XPath

1.winform 程序  迭代XML文档所有节点

 

Xmldocument,XmlElement,XmlText

   listbox+button

 

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

        private void button1_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();

            XmlDocument document = new XmlDocument();
            document.Load("../../XMLFile1.xml");
            RecureXmlDocument(document.DocumentElement, 0);
            
        }
        private void RecureXmlDocument(XmlNode root, int ident)
        {
            //如果root为空，啥也不做
            if (root == null)
                return;

            if (root is XmlElement)
            {
                listBox1.Items.Add(root.Name.PadLeft(root.Name.Length+ident));

                if (root.HasChildNodes)
                {

                    RecureXmlDocument(root.FirstChild, ident + 2);

                }

                if (root.NextSibling != null)
                {
                    RecureXmlDocument(root.NextSibling, ident);
                }

            }

            else if (root is XmlText)
            {
                string text = ((XmlText)root).Value;
                listBox1.Items.Add(text.PadLeft(text.Length+ident));

            }



        }


    }
}

 

 

2.修改节点的值

  InnerText,InnerXml,Value

  插入新节点

  删除节点

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

        private void button1_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();

            XmlDocument document = new XmlDocument();
            document.Load("../../XMLFile1.xml");
            RecureXmlDocument(document.DocumentElement, 0);
            
        }
        private void RecureXmlDocument(XmlNode root, int ident)
        {
            //如果root为空，啥也不做
            if (root == null)
                return;

            if (root is XmlElement)
            {
                listBox1.Items.Add(root.Name.PadLeft(root.Name.Length+ident));

                if (root.HasChildNodes)
                {

                    RecureXmlDocument(root.FirstChild, ident + 2);

                }

                if (root.NextSibling != null)
                {
                    RecureXmlDocument(root.NextSibling, ident);
                }
                

            }

            else if (root is XmlText)
            {
                string text = ((XmlText)root).Value;
                listBox1.Items.Add(text.PadLeft(text.Length+ident));

            }
            else if (root is XmlComment)
            {

                string text = root.Value;
                listBox1.Items.Add(text.PadLeft(text.Length+ident));

                if(root.HasChildNodes)
                    RecureXmlDocument(root.FirstChild,ident+2);
                if(root.NextSibling!=null)
                {
                    RecureXmlDocument(root.NextSibling,ident);
                }
            }


        }

        /// <summary>
        /// 添加节点
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button2_Click(object sender, EventArgs e)
        {

            XmlDocument document = new XmlDocument();
            document.Load("../../XMLFile1.xml");
            XmlElement root = document.DocumentElement;

            XmlElement book = document.CreateElement("book");
            XmlElement title = document.CreateElement("title");
            XmlElement author = document.CreateElement("author");
            XmlElement newcode= document.CreateElement("code");

            XmlText txtTitle = document.CreateTextNode("title3");
            XmlText txtAuthor = document.CreateTextNode("Author3");
            XmlText code = document.CreateTextNode("1234567789");

            XmlComment comment = document.CreateComment("This is common");

            book.AppendChild(comment);
            book.AppendChild(title);
            book.AppendChild(author);
            book.AppendChild(newcode);

            title.AppendChild(txtTitle);
            author.AppendChild(txtAuthor);
            newcode.AppendChild(code);


            root.InsertAfter(book, root.FirstChild);

            document.Save("../../XMLFile1.xml");
            
        }



        /// <summary>
        /// 删除节点
        /// </summary>
        private void button3_Click(object sender ,EventArgs e)
        {
            XmlDocument document = new XmlDocument();
            document.Load("../../XMLFile1.xml");

            XmlElement root = document.DocumentElement;

            if (root.HasChildNodes)
            {
                XmlNode book = root.LastChild;
                root.RemoveChild(book);

                document.Save("../../XMLFile1.xml");
            }
        }
       
    }

        
}

 

 

 

2.Xpath

   

 

 

 

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;           //XML document
namespace Xpath
{
    public partial class Form1 : Form
    {
        private XmlDocument mDocument;
        private XmlNode mCurrenNode;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            mDocument = new XmlDocument();

            mDocument.Load("../../XPathQuery.xml");

            mCurrenNode = mDocument.DocumentElement;   //顶级节点

            ClearListBox();
        }
        private void ClearListBox()
        {
            listBox1.Items.Clear();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }


        private void displayNodeList(XmlNodeList nodelist)
        {
            foreach(XmlNode node in nodelist)
            {
                RecurseDocumentNoSiblings(node,0);

            }


        }


        private void RecurseDocumentNoSiblings(XmlNode root,int indent)
        {
            if (root == null)
            {
                return;

            }
            else if (root is XmlElement)
            {
                listBox1.Items.Add(root.Name.PadLeft(root.Name.Length+indent));

                if (root.HasChildNodes)
                    RecurseDocument(root.FirstChild, indent + 2);
            }
            else if (root is XmlText)
            {
                string text = ((XmlText)root).Value;
                listBox1.Items.Add(text.PadLeft(text.Length + indent));

            }
            else if (root is XmlComment)
            {
                string text = root.Value;
                listBox1.Items.Add(text.PadLeft(text.Length+indent));

                if (root.HasChildNodes)
                {
                    RecurseDocument(root, indent + 2);
                }

            }

        }


        private void RecurseDocument(XmlNode root, int indent)
        {

            if (root == null)
            {
                return;

            }
            else if (root is XmlElement)
            {
                listBox1.Items.Add(root.Name.PadLeft(root.Name.Length + indent));

                if (root.HasChildNodes)
                    RecurseDocument(root.FirstChild, indent + 2);

                if (root.NextSibling != null)
                {
                    RecurseDocument(root.NextSibling, indent);
                }
            }
            else if (root is XmlText)
            {
                string text = ((XmlText)root).Value;
                listBox1.Items.Add(text.PadLeft(text.Length + indent));

            }
            else if (root is XmlComment)
            {
                string text = root.Value;
                listBox1.Items.Add(text.PadLeft(text.Length + indent));

                if (root.HasChildNodes)
                {
                    RecurseDocument(root, indent + 2);
                }

                if (root.NextSibling != null)
                {
                    RecurseDocument(root.NextSibling, indent);
                }

            }

        }

        private void radioButtonSelectRoot_CheckedChanged(object sender, EventArgs e)
        {
            mCurrenNode = mDocument.DocumentElement.SelectSingleNode("//books");
            ClearListBox();
            RecurseDocument(mCurrenNode, 0);

        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (txtQuery.Text.Trim() == "")
            {
                return;
            }
            try
            {
                XmlNodeList nodelist = mCurrenNode.SelectNodes(txtQuery.Text);
                ClearListBox();
                displayNodeList(nodelist);
            }
            catch (System.Exception err)
            {
                MessageBox.Show(err.Message);
            }
        }

        private void radioButtonSelectAllAhtors_CheckedChanged(object sender, EventArgs e)
        {
            if (mCurrenNode != null)
            {
                XmlNodeList nodelist = mCurrenNode.SelectNodes("//book/author");
                ClearListBox();
                displayNodeList(nodelist);
            }
            else
            {
                ClearListBox();
            }
        }

        private void radioButtonselectSpecialAuthor_CheckedChanged(object sender, EventArgs e)
        {
            if (mCurrenNode != null)
            {
                XmlNodeList nodelist = mDocument.SelectNodes("//book[author='1.1']");
                ClearListBox();
                displayNodeList(nodelist);

            }
            else
            {
                ClearListBox();
            }
        }

        private void radioButtonselectAllBooks_CheckedChanged(object sender, EventArgs e)
        {
            if (mCurrenNode != null)
            {
                XmlNodeList nodelist = mDocument.SelectNodes("//book");
                ClearListBox();
                displayNodeList(nodelist);

            }
            else
            {
                ClearListBox();
            }
        }

        private void radioButtonSetBookAsCurrent_CheckedChanged(object sender, EventArgs e)
        {
            if (mCurrenNode != null)
            {
                mCurrenNode = mDocument.SelectSingleNode("//book[title='VS 2003']");
                ClearListBox();
                RecurseDocumentNoSiblings(mCurrenNode, 0);

            }
            else
            {
                ClearListBox();
            }
        }

        private void radioButtonSetBooksAsCurrent_CheckedChanged(object sender, EventArgs e)
        {
            if (mCurrenNode != null)
            {
                mCurrenNode = mDocument.SelectSingleNode("//books");
                ClearListBox();
                RecurseDocumentNoSiblings(mCurrenNode, 0);

            }
            else
            {
                ClearListBox();
            }
        }

        private void radioButtonSelectAllChildren_CheckedChanged(object sender, EventArgs e)
        {
            if (mCurrenNode != null)
            {
                XmlNodeList nodelist = mCurrenNode.SelectNodes("*");
                ClearListBox();
                displayNodeList(nodelist);
            }
            else
            {
                ClearListBox();
            }
        }

    }
}

944">
    <title>VS 2003</title>
    <author>1.1</author>
    <author>1.2</author>
    <author>1.3</author>
    <author>1.4</author>
    <author>1.5</author>
    <author>1.6</author>
    <author>1.7</author>
    <author>1.8</author>
    <author>1.9</author>
    <code> 1</code>
  </book>
  <book pages="1000">
    <title>VS 2005</title>
    <author>2.1</author>
    <author>2.2</author>
    <author>2.3</author>
    <author>2.4</author>
    <author>2.5</author>
    <author>2.6</author>
 
    <code> 2</code>
  </book>
  <book pages="2000">
    <title>VS 2008</title>
    <author>3.1</author>
    <author>3.2</author>
    <author>3.3</author>
    <author>3.4</author>
    <author>3.5</author>
    <author>3.6</author>
    <author>3.7</author>
    <author>3.8</author>
    <author>3.9</author>
    <code> 3</code>
  </book>
  
</books>