XPathDocument的相关用法（待整理）

<?xml version="1.0" encoding="utf-8"?>

<notepad>

<topic>主题</topic>

<content>内容内容</content>

</notepad>

xpath.aspx

<%@Page Language="c#" ValidateRequest="false" Debug="true"%>

<%@Import Namespace="System.Xml.XPath"%>

<Script Language="C#" Runat="Server">

public void Page_Load(Object src,EventArgs e)

{

XPathDocument doc = new XPathDocument(Server.MapPath("demo.xml"));

XPathNavigator nav = doc.CreateNavigator();

XPathNodeIterator ite = nav.Select("/notepad/topic");

//移动到下一个节点，下一个节点是文字节点。

ite.MoveNext();

Response.Write (ite.Current.Value);

ite = nav.Select("/notepad/content");

//移动到下一个节点，下一个节点是文字节点。

ite.MoveNext();

Response.Write (ite.Current.Value);

}

</Script>

C#

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;

using System.Xml.XPath;

namespace convertDell

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void Convertbutton_Click(object sender, EventArgs e)

{

// char[] Oldchar = {'?', '3', '2', '4'};

string[] OldString;

XPathDocument XPathDom;

XPathNavigator XPathNav;

XPathNodeIterator XPathNodeIte;

string ExpressionStr,Newchar;

ExpressionStr = string.Empty;

Newchar = string.Empty;

//OldString = string.Empty;

OldString = OldtextBox.Text.Split(new char[]{'/r','/n'},StringSplitOptions.RemoveEmptyEntries);

XPathDom=new XPathDocument("ConvertRull.xml");

XPathNav = XPathDom.CreateNavigator();

foreach (string Old in OldString)

{

ExpressionStr = "convertrull/rull1/word[@old='" + Old + "']";

XPathNodeIte = XPathNav.Select(ExpressionStr);

/*

while (XPathNodeIte.MoveNext())

Newchar += XPathNodeIte.Current.Value + "/r/n";

*/

XPathNodeIte.MoveNext();

//移动到下一个结点，下一个结点才是文字结点,当前结点是元素结点，若没往下移，取出来的

//值则是元素的值，若元素有好多个相同，则值就好多个,即去掉MoveNext()这行代码

Newchar += XPathNodeIte.Current.Value + "/r/n";

}

ConverttotextBox.Text = Newchar;

}

}

}