Csharp/CSharp Tutorial/XML/Xml Read

Load xml from xml file directly

using System;
using System.Xml;
class MainClass
{
  static void Main(string[] args)
  {
    string filename = @"C:\books.xml";     
    XmlDocument xmlDoc = new XmlDocument();    
    xmlDoc.LoadXml(filename);


        xmlDoc.Save(Console.Out);

  }    
 
}

Read XML content as double

using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Xml;
    public class MainClass
    {
        public static void Main()
        {
            XmlReader reader;
            double totalPrice=0;
            
            reader = XmlReader.Create("pubs.xml");
            while (reader.Read())
            {
                if (reader.IsStartElement() && reader.Name=="titles")
                {
                    reader.MoveToAttribute("price");
                    totalPrice += reader.ReadContentAsDouble();
                }
            }
        }
    }

Read XML from URL

using System;
using System.IO;
using System.Xml;
class MainClass
{    
  static void Main(string[] args)
  {
    string localURL = "http:\\www.yoursite.ru\\Test.xml";
    XmlTextReader myXmlURLreader = null;
    myXmlURLreader = new XmlTextReader (localURL);
    while (myXmlURLreader.Read())
    {
      //TODO - 
    }
    if (myXmlURLreader != null)
      myXmlURLreader.Close();
  }
}

Set Book As Current

using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Xml;
public class MainClass
{
    public static void Main()
    {
        XmlDocument mDocument = new XmlDocument();
        XmlNode mCurrentNode;
        mDocument.Load("XPathQuery.xml");
        mCurrentNode = mDocument.DocumentElement;
        mCurrentNode = mCurrentNode.SelectSingleNode("book[title="C#"]");
        RecurseXmlDocumentNoSiblings(mCurrentNode);
    }
    static void DisplayList(XmlNodeList nodeList)
    {
        foreach (XmlNode node in nodeList)
        {
            RecurseXmlDocumentNoSiblings(node);
        }
    }
    static void RecurseXmlDocumentNoSiblings(XmlNode root)
    {
        if (root is XmlElement)
        {
            Console.WriteLine(root.Name);
            if (root.HasChildNodes)
                RecurseXmlDocument(root.FirstChild);
        }
        else if (root is XmlText)
        {
            string text = ((XmlText)root).Value;
            Console.WriteLine(text);
        }
        else if (root is XmlComment)
        {
            string text = root.Value;
            Console.WriteLine(text);
            if (root.HasChildNodes)
                RecurseXmlDocument(root.FirstChild);
        }
    }
    static void RecurseXmlDocument(XmlNode root)
    {
        if (root is XmlElement)
        {
            Console.WriteLine(root.Name);
            if (root.HasChildNodes)
                RecurseXmlDocument(root.FirstChild);
            if (root.NextSibling != null)
                RecurseXmlDocument(root.NextSibling);
        }
        else if (root is XmlText)
        {
            string text = ((XmlText)root).Value;
            Console.WriteLine(text);
        }
        else if (root is XmlComment)
        {
            string text = root.Value;
            Console.WriteLine(text);
            if (root.HasChildNodes)
                RecurseXmlDocument(root.FirstChild);
            if (root.NextSibling != null)
                RecurseXmlDocument(root.NextSibling);
        }
    }
}

Set up XmlReaderSettings

using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Xml;
using System.Xml.Schema;
    public class MainClass
    {
        public static void Main()
        {
            XmlReaderSettings settings = new XmlReaderSettings();
            settings.ProhibitDtd = false;
            settings.ValidationType = ValidationType.DTD;
            //settings.ValidationType=ValidationType.Schema;
            //settings.Schemas.Add("", "");
            settings.ValidationEventHandler += new ValidationEventHandler(OnValidationError);
            XmlReader reader=XmlReader.Create("value", settings);
            while (reader.Read())
            {
            }
            reader.Close();
        }
        static void OnValidationError(object sender, ValidationEventArgs e)
        {
            MessageBox.Show(e.Message);
        }
    }

To read from an XML file

using System;
using System.IO;
using System.Xml;
class MainClass
{
  static void Main(string[] args)
  {
    XmlTextReader reader = new XmlTextReader("Sample.xml");
    // Read the File
    while (reader.Read())
    {
      
    }
    if (reader != null)
      reader.Close();
  }
}