1.winform 程序 迭代XML文档所有节点
Xmldocument,XmlElement,XmlText
listbox+button
XML文档<?xml version="1.0" encoding="utf-8" ?>
<books>
<book>
<title>Beginning Visual C#</title>
<author>Karli watson</author>
<code>7582</code>
</book>
<book>
<title>Professional C# 2ND Edition</title>
<author>Simon Robinson</author>
<code>7043</code>
</book>
</books>
CS文件 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
CS 插入，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
Form1.csusing 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();
}
}
}
}
XPathQuery.xml<?xml version="1.0" encoding="utf-8" ?>
<books>
<book pages="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>
