using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Xml;
using System.IO;
using System.Windows.Forms;

namespace WindowsFormsApplication27
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            zapis();
            cteni();
        }
        private void zapis()
        {
            XmlDocument doc = new XmlDocument();
            if (File.Exists("soubor.xml") == false)
            {
                FileStream fst = File.Create("soubor.xml");
                string sablona = "<?xml version=\"1.0\" encoding=\"windows-1250\"?><datumy></datumy>";
                fst.Close();
                File.WriteAllText("soubor.xml", sablona);
            }

            doc.Load("soubor.xml");

            XmlElement element = doc.CreateElement("spusteni");
            XmlAttribute atribut = doc.CreateAttribute("datum");
            atribut.Value =  DateTime.Now.ToString();

            element.SetAttributeNode(atribut);

            doc.DocumentElement.InsertBefore(element, doc.DocumentElement.LastChild);

            doc.Save("soubor.xml");
        }
        private void cteni()
        {
            XmlDocument doc = new XmlDocument();
            doc.Load("soubor.xml");

            XmlNode root = doc.DocumentElement;

            foreach (XmlNode node in root.ChildNodes)
            {
                label1.Text += Environment.NewLine + node.Attributes[0].Value;
            }
        }
    }
}