using System;

using System.Xml;

using System.Xml.Linq;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var xml = @" <products>

        <product ID='4de'>

            <name>Prod name</name>

        </product>

        <product ID='4dea'>

            <name>Prod name 2</name>

        </product>      

</products>";

        var root = new XmlDocument();

        root.LoadXml(xml);

        var nodeList = root.SelectNodes("/products/product");

        foreach (XmlNode node in nodeList)

        {

            var id = node.SelectSingleNode("@ID").InnerText;

            Console.WriteLine(id);

        }

    }

}