using System;

using System.Xml;

​

public class Program

{

    public static void Main()

    {

        XmlDocument doc = new XmlDocument();

        doc.LoadXml("<Tables><Table name=\"Test\"><tablename>TestTable</tablename><refTable>NULL</refTable><refTableIDColumn>NULL</refTableIDColumn></Table></Tables>");

        var nodes = doc.SelectNodes("//Table/@name");

        foreach(var node in nodes)

                Console.WriteLine(((XmlAttribute)node).InnerText);

    }

}