Csharp/C Sharp/XML LINQ/Ancestors

A More Concise Example of Calling the First Ancestors Prototype

<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")),
 new XElement("Book",
  new XAttribute("type", "Author"),
  new XElement("FirstName", "E"),
  new XElement("LastName", "B"))));
       foreach (XElement element in
        xDocument.Element("Books").Descendants("FirstName").Ancestors()) {
           Console.WriteLine("Ancestor element: {0}", element.Name);
       }
   }

}

</source>

An Example of Calling the First Ancestors Prototype

<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 xDocument = new XElement(new XElement("Books",
        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"))));
       IEnumerable<XElement> elements =
        xDocument.Element("Books").Descendants("FirstName");
       foreach (XElement element in elements) {
           Console.WriteLine("Source element: {0} : value = {1}",
            element.Name, element.Value);
       }
       foreach (XElement element in elements.Ancestors()) {
           Console.WriteLine("Ancestor element: {0}", element.Name);
       }
   }

}

</source>

Calling the Second Ancestors Prototype

<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")),
          new XElement("Book",
           new XAttribute("type", "Author"),
          new XElement("FirstName", "E"),
          new XElement("LastName", "B"))));
       IEnumerable<XElement> elements = xDocument.Element("Books").Descendants("FirstName");
       foreach (XElement element in elements) {
           Console.WriteLine("Source element: {0} : value = {1}",element.Name, element.Value);
       }
       foreach (XElement element in elements.Ancestors("Book")) {
           Console.WriteLine("Ancestor element: {0}", element.Name);
       }
   }

}

</source>

Without Calling the Ancestors Operator

<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")),
          new XElement("Book",
           new XAttribute("type", "Author"),
          new XElement("FirstName", "E"),
          new XElement("LastName", "B"))));
       IEnumerable<XElement> elements =
        xDocument.Element("Books").Descendants("FirstName");
       foreach (XElement element in elements) {
           Console.WriteLine("Source element: {0} : value = {1}",element.Name, element.Value);
       }
       foreach (XElement element in elements) {
           foreach (XElement e in element.Ancestors())
               Console.WriteLine("Ancestor element: {0}", e.Name);
       }
   }

}

</source>