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

XNode.AddAfterSelf

<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() {
       XDocument xDocument = new XDocument(
         new XElement("Books",
           new XElement("Book",
             new XAttribute("type", "Author"),
             new XElement("FirstName", "J"),
             new XElement("LastName", "R"))));
       xDocument.Element("Books").Add(
         new XElement("Book",
           new XAttribute("type", "Author"),
           new XElement("FirstName", "E"),
           new XElement("LastName", "B")));
       xDocument.Element("Books").
         Element("Book").AddAfterSelf(
           new XElement("Book",
             new XAttribute("type", "Reviewer"),
             new XElement("FirstName", "F"),
             new XElement("LastName", "F")));
       Console.WriteLine(xDocument);
   }

}

 </source>

XNode.AddBeforeSelf

<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() {
       XDocument xDocument = new XDocument(
         new XElement("Books",
           new XElement("Book",
             new XAttribute("type", "Author"),
             new XElement("FirstName", "A"),
             new XElement("LastName", "B"))));
       xDocument.Element("Books").Add(
         new XElement("Book",
           new XAttribute("type", "Author"),
           new XElement("FirstName", "E"),
           new XElement("LastName", "B")));
       xDocument.Element("Books").
         Elements("Book").
         Where(e => ((string)e.Element("FirstName")) == "E").
         Single<XElement>().AddBeforeSelf(
           new XElement("Book",
             new XAttribute("type", "Reviewer"),
             new XElement("FirstName", "F"),
             new XElement("LastName", "F")));
       Console.WriteLine(xDocument);
   }

}

 </source>

XNode.AddFirst

<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() {
       XDocument xDocument = new XDocument(
         new XElement("Books",
           new XElement("Book",
             new XAttribute("type", "Author"),
             new XElement("FirstName", "J"),
             new XElement("LastName", "R"))));
       xDocument.Element("Books").AddFirst(
         new XElement("Book",
           new XAttribute("type", "Author"),
           new XElement("FirstName", "E"),
           new XElement("LastName", "B")));
       Console.WriteLine(xDocument);
   }

}

 </source>