Solved

XML Document Loading

Posted on 2006-06-11
4
234 Views
Last Modified: 2010-04-16
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using MSXML2;

namespace ManipulateXML
{
    public partial class Form1 : Form
    {
        private DOMDocument40 doc;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            string search = listBox1.SelectedItem.ToString();
            IXMLDOMNode nd = doc.selectSingleNode("bookstore/book[@ISBN=' " + search + " ' ]");
            MessageBox.Show(nd.text);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            doc = new DOMDocument40();
            doc.load("books.xml");
            IXMLDOMNodeList nodes;
            nodes = doc.selectNodes("bookstore/book");
            IXMLDOMNode node = nodes.nextNode();

            while (node != null)
            {
                listBox1.Items.Add(node.attributes.getNamedItem("ISBN").text);
                node = nodes.nextNode();
            }
        }
    }
}

this is a pretty simple code to understand. Button click loads an XML document called books.xml and I try to get information about the ISBN of all book nodes.
I compile and it compiles but on button click nothing happens. When i ran debugger I saw that 'while (node != null ' is a false statement. Please help
0
Comment
Question by:deersuper
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 13

Expert Comment

by:dungla
ID: 16883089
Please paste your xml file here
0
 
LVL 13

Expert Comment

by:dungla
ID: 16883093
And you can use System.XML instead of MSXML2 if no special purpose.
0
 
LVL 2

Author Comment

by:deersuper
ID: 16883580
<?xml version="1.0" encoding="utf-8" ?>
<bookstore>
  <book genre="autobiography" publicationdate="1981" ISBN="1-816003-11-0">
    <title>title 1</title>
    <author>
      <first-name>ben </first-name>
      <last-name>franklin</last-name>
    </author>
    <price>899</price>
  </book>

  <book genre="novel" publicationdate="1967" ISBN="1-768503-11-0">
    <title>title 2</title>
    <author>
      <first-name>usman </first-name>
      <last-name>lakjai</last-name>
    </author>
    <price>299</price>
  </book>

  <book genre="sex" publicationdate="1381" ISBN="1-300618-11-0">
    <title>chudai</title>
    <author>
      <first-name>azam </first-name>
      <last-name>franklin</last-name>
    </author>
    <price>999</price>
  </book>
</bookstore>

the code book i am using specifically asks for using msxml2. thats why I used it !!!!!! thanks
0
 
LVL 52

Accepted Solution

by:
Carl Tawn earned 250 total points
ID: 16883983
As mentioned earlier, you'd be better off simply including the System.Xml namespace rather than using the older MSXML2.

Then you can use something more like:

        private void button1_Click(object sender, EventArgs e)
        {
            doc = new XmlDocument();
            doc.Load("C:\\Test.xml");

            XmlNodeList nodes = doc.SelectNodes("bookstore/book");

            foreach (XmlNode node in nodes)
                listBox1.Items.Add(node.Attributes["ISBN"].InnerText);
        }

        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            string search = ((ListBox)sender).SelectedItem.ToString();
            XmlNode nd = doc.SelectSingleNode("bookstore/book[@ISBN='" + search + "']");

            MessageBox.Show(nd.InnerText);
        }
0

Featured Post

[Webinar] Learn How Hackers Steal Your Credentials

Do You Know How Hackers Steal Your Credentials? Join us and Skyport Systems to learn how hackers steal your credentials and why Active Directory must be secure to stop them. Thursday, July 13, 2017 10:00 A.M. PDT

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Extention Methods in C# 3.0 by Ivo Stoykov C# 3.0 offers extension methods. They allow extending existing classes without changing the class's source code or relying on inheritance. These are static methods invoked as instance method. This…
This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question