Copying part of an xml document to another document using Xdocument

Question

I have an xml document which is roughly as follows

Answer 1

Read in the input XML into one XDocument and construct a second, passing in the node you are interested in:

XDocument newDoc = new XDocument(XDocument.Load("input.xml").Descendants("Body").First());

Answer 2

Here is an example of copying data "xml" from one document to another.With selection of personalized node

First you need convert Xdocument to XmlDocument:

using System;
using System.Xml;
using System.Xml.Linq;

namespace MyTest
{
    internal class Program
    {
        private static void Main(string[] args)
        {

            var xmlDocument = new XmlDocument();
            xmlDocument.LoadXml("<Root><Child>Test</Child></Root>");

            var xDocument = xmlDocument.ToXDocument();
            var newXmlDocument = xDocument.ToXmlDocument();
            Console.ReadLine();
        }
    }

    public static class DocumentExtensions
    {
        public static XmlDocument ToXmlDocument(this XDocument xDocument)
        {
            var xmlDocument = new XmlDocument();
            using(var xmlReader = xDocument.CreateReader())
            {
                xmlDocument.Load(xmlReader);
            }
            return xmlDocument;
        }

        public static XDocument ToXDocument(this XmlDocument xmlDocument)
        {
            using (var nodeReader = new XmlNodeReader(xmlDocument))
            {
                nodeReader.MoveToContent();
                return XDocument.Load(nodeReader);
            }
        }
    }
}

And now simplified copy with XmlDocument

    XmlDocument doc1 = new XmlDocument();
    doc1.LoadXml(@"<Hello>
                           <World>Test</World>
                   </Hello>");

    XmlDocument doc2 = new XmlDocument();
    doc2.LoadXml(@"<Hello>
                   </Hello>");

    XmlNode copiedNode = doc2.ImportNode(doc1.SelectSingleNode("/Hello/World"), true);
    doc2.DocumentElement.AppendChild(copiedNode);

more information here:

1. http://blog.project-sierra.de/archives/1050
2. Copy Xml element to another document in C#
3. Converting XDocument to XmlDocument and vice versa

I hope this help you.