Csharp/C Sharp/XML/XML Write

Create XML document with XmlWriter

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", "Tea Pot");
        w.WriteElementString("productPrice", "12.99");
        w.WriteEndElement();
        w.WriteEndElement();
        w.WriteEndDocument();
        w.Flush();
        fs.Close();
    }
}

Illustrates the XmlTextWriter class

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy
Publisher: Sybex;
ISBN: 0782129110
*/

/*
  Example20_1.cs illustrates the XmlTextWriter class
*/
using System;
using System.Xml;
public class Example20_1 
{
    public static void Main() 
    {
        // use the XmlTextWriter to open a new XML file
        XmlTextWriter xw = new XmlTextWriter(@"Cust4.xml", 
            System.Text.Encoding.UTF8);
        // write the document declaration
        xw.WriteStartDocument();
        // write the first element
        xw.WriteStartElement("NewDataSet");
        // write the first customer
        xw.WriteStartElement("Customers");
        xw.WriteElementString("CustomerID", "ALFKI");
        xw.WriteElementString("CompanyName", "Alfreds Futterkiste");
        xw.WriteElementString("ContactName", "Maria Anders");
        xw.WriteElementString("ContactTitle", "Sales Representative");
        xw.WriteElementString("Address", "Obere Str. 57");
        xw.WriteElementString("City", "Berlin");
        xw.WriteElementString("PostalCode", "12209");
        xw.WriteElementString("Country", "Germany");
        xw.WriteElementString("Phone", "030-0074321");
        xw.WriteElementString("Fax", "030-0076545");
        xw.WriteEndElement();
        // write the second customer
        xw.WriteStartElement("Customers");
        xw.WriteElementString("CustomerID", "BONAPP");
        xw.WriteElementString("CompanyName", "Bon App"");
        xw.WriteElementString("ContactName", "Laurence Lebihan");
        xw.WriteElementString("ContactTitle", "Owner");
        xw.WriteElementString("Address", "12, rue des Bouchers");
        xw.WriteElementString("City", "Marseille");
        xw.WriteElementString("PostalCode", "13008");
        xw.WriteElementString("Country", "France");
        xw.WriteElementString("Phone", "91.24.45.40");
        xw.WriteElementString("Fax", "91.24.45.41");
        xw.WriteEndElement();
        // end the NewDataSet element
        xw.WriteEndElement();
        // end the document
        xw.WriteEndDocument();
        // flush and close
        xw.Flush();
        xw.Close();
    }
}
/**/

Read and Write XML Without Loading an Entire Document into Memory

using System;
using System.Xml;
using System.IO;
using System.Text;
public class ReadWriteXml {
    private static void Main() {
        FileStream fs = new FileStream("products.xml", FileMode.Create);
        XmlTextWriter w = new XmlTextWriter(fs, Encoding.UTF8);
        w.WriteStartDocument();
        w.WriteStartElement("products");
        w.WriteStartElement("product");
        w.WriteAttributeString("id", "01");
        w.WriteElementString("name", "C#");
        w.WriteElementString("price", "0.99");
        w.WriteEndElement();
        w.WriteEndElement();
        w.WriteEndDocument();
        w.Flush();
        fs.Close();
        Console.WriteLine("Document created.");
        fs = new FileStream("products.xml", FileMode.Open);
        XmlTextReader r = new XmlTextReader(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("\tATTRIBUTE: " + r.GetAttribute(i));
                    }
                }
            }else if (r.NodeType == XmlNodeType.Text) {
                Console.WriteLine("\tVALUE: " + r.Value);
            }
        }
    }
}

Write To 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;
using System.Xml.Schema;

namespace Client.Chapter_22___XML
{
  public class WriteToXMLFile
  {
    static void Main(string[] args)
    {
      string document = "newbooks.xml";
      XmlTextWriter myXmlTextWriter = null;
      XmlTextReader myXmlTextReader = null;
      myXmlTextWriter = new XmlTextWriter(args[1], null);
      myXmlTextWriter.Formatting = Formatting.Indented;
      myXmlTextWriter.WriteStartDocument(false);
      myXmlTextWriter.WriteDocType("bookstore", null, "books.dtd", null);
      myXmlTextWriter.WriteComment("This file represents another fragment of a book store inventory database");
      myXmlTextWriter.WriteStartElement("bookstore");
      myXmlTextWriter.WriteStartElement("book", null);
      myXmlTextWriter.WriteAttributeString("genre", "autobiography");
      myXmlTextWriter.WriteAttributeString("publicationdate", "1979");
      myXmlTextWriter.WriteAttributeString("ISBN", "0-7356-0562-9");
      myXmlTextWriter.WriteElementString("title", null, "The Autobiography of Mark Twain");
      myXmlTextWriter.WriteStartElement("Author", null);
      myXmlTextWriter.WriteElementString("first-name", "Mark");
      myXmlTextWriter.WriteElementString("last-name", "Twain");
      myXmlTextWriter.WriteEndElement();
      myXmlTextWriter.WriteElementString("price", "7.99");
      myXmlTextWriter.WriteEndElement();
      myXmlTextWriter.WriteEndElement();
      //Write the XML to file and close the writer
      myXmlTextWriter.Flush();
      myXmlTextWriter.Close();
      if (myXmlTextWriter != null)
        myXmlTextWriter.Close();
    }
  }
}

Write XML document to console

using System;
using System.Xml;
public class HelloXML {
  public static void Main(string [] args) {
    XmlTextWriter writer = new XmlTextWriter(Console.Out);
    writer.WriteStartDocument( );
    writer.WriteElementString("www.nfex.ru", "XML");
    writer.WriteEndDocument( );
    writer.Close( );
  }
}

Writing XML with the XmlWriter Class

using System;
using System.IO;
using System.Xml;
   
class MainClass
{
    static public void Main()
    {
        XmlTextWriter XmlWriter = new XmlTextWriter(Console.Out);
        
        XmlWriter.WriteStartDocument();
        XmlWriter.WriteComment("This is the comments.");
        XmlWriter.WriteStartElement("BOOK");
        XmlWriter.WriteElementString("TITLE", "this is the title.");
        XmlWriter.WriteElementString("AUTHOR", "I am the author.");
        XmlWriter.WriteElementString("PUBLISHER", "who is the publisher");
        XmlWriter.WriteEndElement();
        XmlWriter.WriteEndDocument();
    }
}

XML Write: comment, start element, end element, attribute

using System;
using System.Xml;
public class TestXMLWriter{
  static void Main(string[] args)
  {
    XmlTextWriter writer = new XmlTextWriter("test.xml", new System.Text.ASCIIEncoding());
    writer.Formatting = Formatting.Indented;
    writer.Indentation = 4;
    writer.WriteStartDocument();
    writer.WriteComment("Comment");
    writer.WriteStartElement("ElementName", "myns");
    writer.WriteStartAttribute("prefix", "attrName", "myns");
    writer.WriteEndAttribute();
    writer.WriteElementString("ElementName", "myns", "value");
    writer.WriteEndElement();
    writer.WriteEndDocument();
    writer.Flush();
    writer.Close();
  }
}