using System;
using System.Xml.Linq;

//XML:
//<goods>
//  <good id="1">chair</good>
//  <good id="2">table</good>
//</goods>

var goods = new XElement("goods",
    new XElement("good", "chair",
        new XAttribute("id", 1)),
    new XElement("good", "table",
        new XAttribute("id", 2)));

var value = goods.Element("good")?.Value;
//value is "chair"

Console.WriteLine(value);