public RapportHebdomadaire(object sth)
 {
     InitializeComponent();
     this.stockhebdo = (StockHebdo)sth;
     stockhebdo.process();
     articles = stockhebdo.getArticles();
     afficher();
 }
        private void stockResiduelToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Filtre filtre = new Filtre();

            String d1, d2;

            if (filtre.ShowDialog() == DialogResult.OK)
            {
                d1 = filtre.getDateDebut();
                d2 = filtre.getDateFin();

                StockHebdo sh = new StockHebdo();
                sh.setDates(d1, d2);

                RapportHebdomadaire rapheb = new RapportHebdomadaire(sh);
                rapheb.Show();
            }

            filtre.Dispose();
        }