Csharp/CSharp Tutorial/XML/Xml Read

Load xml from xml file directly

<source lang="csharp">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);

 }    

}</source>

Read XML content as double

<source lang="csharp">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();
               }
           }
       }
   }</source>

Read XML from URL

<source lang="csharp">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();
 }

}</source>

Set Book As Current

<source lang="csharp">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);
       }
   }

}</source>

Set up XmlReaderSettings

<source lang="csharp">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);
       }
   }</source>

To read from an XML file

<source lang="csharp">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();
 }

}</source>