Windows Forms. Обратный отсчёт

using System;
using System.Windows.Forms;
namespace Test {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
            this.label1.Text = "10";
        }
        private int count;
        private Timer timer = new Timer();
        private void Form1_Load(object sender, EventArgs e) {
            count = Convert.ToInt32(this.label1.Text);
            timer.Interval = 1000;
            timer.Tick += new EventHandler(Run);
            timer.Start();
        }
        private void Run(object sender, EventArgs e) {
            --count;
            if (count > 0) this.label1.Text = count.ToString();
            else {
                this.label1.Text = "Конец!";
                timer.Dispose();
            }
        }
    }
}