CSharp - Updating a Node's Value

Description

Updating a Node's Value

Demo

using System;
using System.Linq;
using System.Xml.Linq;
using System.Collections.Generic;

class Program/*ww w .j a v  a 2  s .  c  o m*/
{
    static void Main(string[] args){
        //  we will use this to reference to one of the elements in the XML tree.
        XElement firstParticipant;
        
        XDocument xDocument = new XDocument(
          new XElement("Books", firstParticipant =
            new XElement("Book",
              new XComment("This is a new author."),
              new XAttribute("type", "Author"),
              new XElement("FirstName", "Joe"),
              new XElement("LastName", "Ruby"))));
        
        Console.WriteLine("Before updating nodes:");
        Console.WriteLine(xDocument);
        
        //  Now, lets update an element, a comment, and a text node.
        firstParticipant.Element("FirstName").Value = "Joey";
        firstParticipant.Nodes().OfType<XComment>().Single().Value =
          "Author of Pro LINQ: Language Integrated Query in C# 2008.";
        ((XElement)firstParticipant.Element("FirstName").NextNode)
          .Nodes().OfType<XText>().Single().Value = "Ruby, Jr.";
        
        Console.WriteLine("After updating nodes:");
        Console.WriteLine(xDocument);
    }
}

Result

Related Topic

• Creating Elements with XElement
• Creating XElement from String value
• Creating XML Tree via XElement
• Creating XElement from LINQ statement
• Creating an Element and Assigning a String As Its Value
• Cast XElement to String
• Cast XElement to the Node Value's Type
• Cast a Node to a Different Data Type Than Its Value's Original Data Type
• Cast to a Bool Calls the System.Xml.XmlConvert.ToBoolean Method
• Use ToString Method on an Element to get XML Tree in String
• Creating a Text Node and Passing It As the Value of a Created Element
• Using Functional Construction to Create an XML
• Generating an XML Tree with a LINQ Query
• Deferred Execution of the XML Tree Construction by Using the XStreamingElement Class
• Accessing Named Child Elements Using the Elements Method
• Accessing the First Child Element with a Specified Name
• Using ReplaceAll to Change an Element's Subtree
• Accessing an Element's Child Elements Using the Elements Method
• Using the OfType Operator to Return Just the Elements
• Use LINQ to restrict the sequence of XML nodes to get comment only
• Adding a Node to the End of the Specified Node's Child Nodes with Add
• Adding a Node to the Beginning of the Specified Node's Child Nodes with AddFirst
• Adding a Node in the Specified Node's Child Nodes with AddBeforeSelf
• Adding a Node in a Specific Location of the Specified Node's Child Nodes with AddAfterSelf
• Deleting a Specific Node with Remove
• Deleting a Sequence of Nodes with Remove
• Removing a Node's Content with RemoveAll
• Using SetElementValue to Update, Add, and Delete Child Elements
• Add annotations based on their type attribute
• Enumerate through the elements and retrieve the element's annotation:

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