CROSSTHREADING - APPEL D'UNE MÉTHODE VIA UN DÉLÉGUÉ SYNCHRONE

using System;
using System.ComponentModel;
using System.Drawing;
using System.Threading;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public class Form1 : Form
    {
        private Icon ico1 = new Icon("ico1.ico");
        private Icon ico2 = new Icon("ico2.ico");

        public Form1()
        {
            InitializeComponent();
            this.timer1.Interval = 1000;
            this.timer1.Start();
            this.timer1.Tick += new EventHandler(timer1_Tick);
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            // Au tick du premier timer, on declenche un thread
            this.timer1.Stop();
            Thread t = new Thread(new ThreadStart(ThreadMethod));
            t.Start();
        }

        private void ThreadMethod()
        {
            // Et dans ce thread, on declenche la méthode qui fera clignoter l'icone de la form 
            // Via un appel synchrone à un délégué
            // Le null signifie que nous ne passons aucun parametre a la méthode (qui n'en attend pas)
            Invoke(new DoBlinkDelegate(DoBlink), null);
        }

        private System.Windows.Forms.Timer timerIcon = new System.Windows.Forms.Timer();
        private delegate void DoBlinkDelegate();
        private void DoBlink()
        {
            timerIcon.Interval = 1000;
            timerIcon.Tick+= new EventHandler(t_Tick);
            timerIcon.Start();
        }

        private bool ico;
        void t_Tick(object sender, EventArgs e)
        {
            // Lors du tick du timer, on fait varier l'icone
            ico = !ico ? true : false;
            if (ico) this.notifyIcon1.Icon = ico1;
            else this.notifyIcon1.Icon = ico2;
        }

        private NotifyIcon notifyIcon1;
        private System.Windows.Forms.Timer timer1;
        private System.ComponentModel.IContainer components = null;
        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.timer1 = new System.Windows.Forms.Timer(this.components);
            this.notifyIcon1 = new System.Windows.Forms.NotifyIcon(this.components);
            this.SuspendLayout();
            // 
            // notifyIcon1
            // 
            this.notifyIcon1.Text = "notifyIcon1";
            this.notifyIcon1.Visible = true;
            // 
            // Form1
            // 
            this.ClientSize = new System.Drawing.Size(292, 273);
            this.Name = "Form1";
            this.Text = "Form1";
            this.ResumeLayout(false);

        }
    }
}