private void ajouterClientToolStripMenuItem_Click(object sender, EventArgs e)
        {
            F_GestionClients F = new F_GestionClients();

            F.Show();
            Hide();
        }
 private void gestionClientToolStripMenuItem_Click(object sender, EventArgs e)
 {
     Admin.Client.F_GestionClients F = new Admin.Client.F_GestionClients();
     F.Show();
     Hide();
 }