Convert String To XmlReader

   
 
//http://validationframework.codeplex.com/
//License:  Microsoft Permissive License (Ms-PL) v1.1  

using System;
using System.Globalization;
using System.IO;
using System.Text;
using System.Xml;

namespace ValidationFramework.Extensions
{
    /// <summary>
    /// String helper methods
    /// </summary>
  public static class StringExtensions
  {        internal static XmlReader ToXmlReader(this string value)
        {
            var settings = new XmlReaderSettings { ConformanceLevel = ConformanceLevel.Fragment, IgnoreWhitespace = true, IgnoreComments = true };

            var xmlReader = XmlReader.Create(new StringReader(value), settings);
            xmlReader.Read();
            return xmlReader;
        }
   }
}

   
     


If a Xml node Has Attributes

using System;
using System.Xml;
using System.IO;
using System.Text;

class MainClass {
private static void Main() {
FileStream fs = new FileStream(“products.xml”, FileMode.Create);

XmlWriter w = XmlWriter.Create(fs);

w.WriteStartDocument();
w.WriteStartElement(“products”);

w.WriteStartElement(“product”);
w.WriteAttributeString(“id”, “1001”);
w.WriteElementString(“productName”, “Gourmet Coffee”);
w.WriteElementString(“productPrice”, “0.99”);
w.WriteEndElement();

w.WriteStartElement(“product”);
w.WriteAttributeString(“id”, “1002”);
w.WriteElementString(“productName”, “Blue China Tea Pot”);
w.WriteElementString(“productPrice”, “102.99”);
w.WriteEndElement();

w.WriteEndElement();
w.WriteEndDocument();
w.Flush();
fs.Close();

fs = new FileStream(“products.xml”, FileMode.Open);

XmlReader r = XmlReader.Create(fs);

while (r.Read()) {
if (r.NodeType == XmlNodeType.Element) {
Console.WriteLine(“<" + r.Name + ">“);
if (r.HasAttributes) {
for (int i = 0; i < r.AttributeCount; i++) { Console.WriteLine(" ATTRIBUTE: " + r.GetAttribute(i)); } } } else if (r.NodeType == XmlNodeType.Text) { Console.WriteLine(" VALUE: " + r.Value); } } } } [/csharp]

Load xml document from xml file

   
 
using System;
using System.Xml;

  class XMLDemo{
    [STAThread]
    static void Main(string[] args) {
      XmlDocument xmlDom = new XmlDocument();
      xmlDom.AppendChild(xmlDom.CreateElement("", "books", ""));
      XmlElement xmlRoot = xmlDom.DocumentElement;
      XmlElement xmlBook;
      XmlElement xmlTitle, xmlAuthor, xmlPrice;
      XmlText xmlText;
    
      xmlBook= xmlDom.CreateElement("", "A", "");
      xmlBook.SetAttribute("property", "", "a");
    
      xmlTitle = xmlDom.CreateElement("", "B", "");
      xmlText = xmlDom.CreateTextNode("text");
      xmlTitle.AppendChild(xmlText);
      xmlBook.AppendChild(xmlTitle);
            
      xmlRoot.AppendChild(xmlBook);
    
      xmlAuthor = xmlDom.CreateElement("", "C", "");
      xmlText = xmlDom.CreateTextNode("textg");
      xmlAuthor.AppendChild(xmlText);
      xmlBook.AppendChild(xmlAuthor);
            
      xmlPrice = xmlDom.CreateElement("", "D", "");
      xmlText = xmlDom.CreateTextNode("99999");
      xmlPrice.AppendChild(xmlText);
      xmlBook.AppendChild(xmlPrice);
    
      xmlRoot.AppendChild(xmlBook);
    
      Console.WriteLine(xmlDom.InnerXml);

      xmlDom.Save("books.xml");
      
      XmlDocument xmlDom2 = new XmlDocument();
      xmlDom2.Load("books.xml");
      Console.WriteLine(xmlDom2.InnerXml);

    }
  }


           
         
     


Read XML From URL

   
 
/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.IO;
using System.Xml;


namespace Client.Chapter_22___XML
{
  public class ReadXMLFromURL
  {    
    static void Main(string[] args)
    {
      string localURL = "http:somehostTest.xml";
      XmlTextReader myXmlURLreader = null;
      myXmlURLreader = new XmlTextReader (localURL);

      while (myXmlURLreader.Read())
      {
        //TODO - 

      }
      if (myXmlURLreader != null)
        myXmlURLreader.Close();

    }
  }
}

           
         
     


Read An XML File

   
 
/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.IO;
using System.Xml;


namespace Client.Chapter_22___XML
{
  public class ReadAnXMLFile
  {
    private const string doc = "Test.xml";
    static void Main(string[] args)
    {
      XmlTextReader reader = null;

      // Load the file with an XmlTextReader
      reader = new XmlTextReader(doc);

      // Read the File
      while (reader.Read())
      {
        //TODO - 
      }

      if (reader != null)
        reader.Close();
    }
  }
}

           
         
     


Access Attributes

   
 



using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;

class Program {
    static void Main(string[] args) {

        XmlDocument documentation = new XmlDocument();
        documentation.Load("DocumentedClasses.xml");
        XmlNodeList memberNodes = documentation.SelectNodes("//member");

        List<XmlNode> typeNodes = new List<XmlNode>();
        foreach (XmlNode node in memberNodes) {
            if (node.Attributes["name"].Value.StartsWith("T")) {
                typeNodes.Add(node);
            }
        }
        foreach (XmlNode node in typeNodes) {
            Console.WriteLine("- {0}", node.Attributes["name"].Value.Substring(2));
        }
    }
}
           
         
     


Reading from an XML file.

   
 

using System;
using System.Xml;

public class MainClass {
    public static void Main(string[] args) {
        XmlTextReader reader = new XmlTextReader(args[0]);

        while (reader.Read()) {
            switch (reader.NodeType) {
                case XmlNodeType.Element: // The node is an Element
                    Console.WriteLine("Element: " + reader.Name);
                    while (reader.MoveToNextAttribute()) // Read attributes
                        Console.WriteLine("  Attribute: [" +
                         reader.Name + "] = &#039;"
                           + reader.Value + "&#039;");
                    break;
                case XmlNodeType.DocumentType: // The node is a DocumentType
                    Console.WriteLine("Document: " + reader.Value);
                    break;
                case XmlNodeType.Comment:
                    Console.WriteLine("Comment: " + reader.Value);
                    break;
            }
        }

        reader.Close();
    }
}