XDocument doc = new XDocument( new XElement("root", new XElement("child1", "Hello"), new XElement("child2", "World") ) );
XDocument doc = XDocument.Load("file.xml"); string value = doc.Element("root").Element("child1").Value;This code loads an existing XML document from a file and retrieves the value of a child element. The Element method returns the first child element with the specified name, while the Value property returns the text content of the element. Package library: System.Xml.Linq.