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 (XNode node in firstParticipant.Elements()) { Console.WriteLine(node); } } }
Calling the Second Attributes Prototype
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")), new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "C"), new XElement("LastName", "D")))); IEnumerable<XElement> elements = xDocument.Element("Books").Elements("Book"); foreach (XElement element in elements) { Console.WriteLine("Source element: {0} : value = {1}", element.Name, element.Value); } foreach (XAttribute attribute in elements.Attributes("type")) { Console.WriteLine("Attribute: {0} : value = {1}", attribute.Name, attribute.Value); } } }
Calling the First Attributes Prototype
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")), new XElement("Book", new XAttribute("type", "Author"), new XElement("FirstName", "C"), new XElement("LastName", "D")))); IEnumerable<XElement> elements = xDocument.Element("Books").Elements("Book"); foreach (XElement element in elements) { Console.WriteLine("Source element: {0} : value = {1}", element.Name, element.Value); } foreach (XAttribute attribute in elements.Attributes()) { Console.WriteLine("Attribute: {0} : value = {1}", attribute.Name, attribute.Value); } } }
Changing an Attribute's Value
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 XAttribute("experience", "first-time"), new XElement("FirstName", "J"), new XElement("LastName", "R")))); Console.WriteLine(xDocument); firstParticipant.Attribute("experience").Value = "beginner"; Console.WriteLine(xDocument); } }
Using SetAttributeValue to Add, Delete, and Update Attributes
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 XAttribute("experience", "first-time"), new XElement("FirstName", "J"), new XElement("LastName", "R")))); Console.WriteLine(xDocument); firstParticipant.SetAttributeValue("type", "beginner"); firstParticipant.SetAttributeValue("language", "English"); firstParticipant.SetAttributeValue("experience", null); Console.WriteLine(xDocument); } }
Removing All of an Element's Attributes
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 XAttribute("experience", "first-time"), new XElement("FirstName", "A"), new XElement("LastName", "B")))); Console.WriteLine(xDocument); firstParticipant.Attributes().Remove(); Console.WriteLine(xDocument); } }
Removing an Attribute
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")))); Console.WriteLine(xDocument); firstParticipant.Attribute("type").Remove(); Console.WriteLine(xDocument); } }