private void toolStripButtonAgenda_Click(object sender, EventArgs e)
        {
            EcranAgenda monEcran;

            monEcran           = new EcranAgenda();
            monEcran.MdiParent = this;
            monEcran.Show();
        }
        private void agendaCTRLEToolStripMenuItem_Click(object sender, EventArgs e)
        {
            EcranAgenda monEcran;

            monEcran           = new EcranAgenda();
            monEcran.MdiParent = this;
            monEcran.Show();
        }