using System.Windows.Forms;
using System.Xml;

namespace xmlpath
{
    public partial class Form1 : Form
    {
        XmlDocument dom = new XmlDocument();
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            dom.Load("h:\\cenik.xml");
            string vyh = "/cenik/dodavatel/adresa/firma[text()='Comp s.r.o.']";

            XmlNode uz = dom.SelectSingleNode(vyh);
            if (uz == null)
                MessageBox.Show("Nenalezen");
            else
                MessageBox.Show(uz.InnerText.ToString());

        }
    }
}