Csharp/C Sharp by API/System.Xml.Linq/XDocument

new XDocument(

<source lang="csharp">

using System; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.Linq; public class MainClass {

   public static void Main() {
       XElement firstParticipant;
       XDocument xDocument = new XDocument(
        new XDeclaration("1.0", "UTF-8", "yes"),
        new XDocumentType("Books", null, "Books.dtd", null),
        new XProcessingInstruction("Book", "out-of-print"),
        new XElement("Books", firstParticipant =
          new XElement("Book",
          new XComment("This is a new author."),
          new XProcessingInstruction("AuthorHandler", "new"),
        new XAttribute("type", "Author"),
        new XElement("FirstName", "J"),
        new XElement("LastName", "R")),
      new XElement("Book",
        new XAttribute("type", "Author"),
        new XElement("FirstName", "E"),
        new XElement("LastName", "B"))));
       foreach (XAttribute attr in firstParticipant.Attributes()) {
           Console.WriteLine(attr);
       }
   }

}

 </source>

XDocument.Changed

<source lang="csharp">

using System; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.Linq; public class MainClass {

   public static void Main() {
       XElement firstParticipant;
       XDocument xDocument = new XDocument(
         new XElement("Books", firstParticipant =
           new XElement("Book",
             new XAttribute("type", "Author"),
             new XElement("FirstName", "J"),
             new XElement("LastName", "R")),
           new XElement("Book",
             new XAttribute("type", "Author"),
             new XElement("FirstName", "E"),
             new XElement("LastName", "B"))));
       Console.WriteLine("{0}{1}", xDocument, System.Environment.NewLine);
       firstParticipant.Changing += new EventHandler<XObjectChangeEventArgs>(
         (object sender, XObjectChangeEventArgs cea) =>
           Console.WriteLine("Type of object changing: {0}, Type of change: {1}",
             sender.GetType().Name, cea.ObjectChange));
       firstParticipant.Changed += (object sender, XObjectChangeEventArgs cea) =>
         Console.WriteLine("Type of object changed: {0}, Type of change: {1}",
           sender.GetType().Name, cea.ObjectChange);
       xDocument.Changed += (object sender, XObjectChangeEventArgs cea) =>
         Console.WriteLine("Doc: Type of object changed: {0}, Type of change: {1}{2}",
           sender.GetType().Name, cea.ObjectChange, System.Environment.NewLine);

       firstParticipant.Element("FirstName").Value = "Seph";
       Console.WriteLine("{0}{1}", xDocument, System.Environment.NewLine);
   }

}

 </source>

XDocument.Load

<source lang="csharp"> using System; using System.Collections; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Data.Linq; using System.Reflection; using System.Xml; using System.Xml.Linq; class Program {

   static void Main(string[] args) {
       XmlReader reader = XmlReader.Create("Employee.xml");
       XDocument xml = XDocument.Load(reader);
       Console.WriteLine(xml);
       XElement idperson = xml.Descendants("idP").Last();
       idperson.Add(new XElement("idperson",
                       new XAttribute("id", 1),
                       new XAttribute("year", 2006),
                       new XAttribute("salary", "16")));
       StringWriter sw = new StringWriter();
       XmlWriter w = XmlWriter.Create(sw);
       xml.Save(w);
       w.Close();
       Console.WriteLine(sw.ToString());
   }

}

 </source>

XDocument.Validate

<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.Schema; using System.Xml.Linq; public class MainClass {

   public static void Main() {
       XDocument xDocument = new XDocument(
         new XElement("Books",
           new XElement("Book",
             new XAttribute("type", "Author"),
             new XElement("FirstName", "A"),
         new XElement("MiddleInitial", "C"),
             new XElement("LastName", "B")),
           new XElement("Book",
             new XAttribute("type", "Author"),
             new XElement("FirstName", "C"),
             new XElement("LastName", "D"))));
       Console.WriteLine(xDocument);
       XmlSchemaSet schemaSet = new XmlSchemaSet();
       schemaSet.Add(null, "bookparticipants.xsd");
       try {
           xDocument.Validate(schemaSet, null);
       } catch (XmlSchemaValidationException ex) {
           Console.WriteLine("Exception occurred: {0}", ex.Message);
       }
   }

}

 </source>

XDocument.XPathSelectElement

<source lang="csharp"> using System; using System.IO; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.XPath; using System.Xml.Schema; using System.Xml.Linq; public class MainClass {

   public static void Main() {
       XDocument xDocument = new XDocument(
         new XElement("Books",
           new XElement("Book",
             new XAttribute("type", "Author"),
             new XElement("FirstName", "A"),
             new XElement("LastName", "B")),
          new XElement("Book",
             new XAttribute("type", "Author"),
             new XElement("FirstName", "C"),
             new XElement("LastName", "D"))));
       XElement bookParticipant = xDocument.XPathSelectElement("//Books/Book[FirstName="A"]");
       Console.WriteLine(bookParticipant);
   }

}

 </source>