Call GetElementsByTagName to get an element
using System; using System.Xml; public class MainClass { private static void Main() { XmlDocument doc = new XmlDocument(); doc.Load("ProductCatalog.xml"); XmlNodeList prices = doc.GetElementsByTagName("productPrice"); decimal totalPrice = 0; foreach (XmlNode price in prices) { totalPrice += Decimal.Parse(price.ChildNodes[0].Value); } Console.WriteLine("Total catalog value: " + totalPrice.ToString()); } }