private void listDesSalariesToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Salarie s = new Salarie();


            List_des_Salarie l = new List_des_Salarie();

            l.MdiParent = this;
            l.dataGridView1.Rows.Clear();
            l.dataGridView1.DataSource = s.Act("salarie");

            l.Show();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            formulair2 f = new formulair2();

            try
            {
                Program.cnx.Open();
                Program.cmd.Connection  = Program.cnx;
                Program.cmd.CommandText = "select numCongé , Nom , Prenom , nomb from  congé as c  , salarie as s where c.matricule = s.matricule and numCongé=" + comboBox1.Text;

                Program.dr = Program.cmd.ExecuteReader();

                if (Program.dr.Read())
                {
                    f.Show();

                    f.textBox1.Text = Program.dr[0].ToString();

                    f.textBox2.Text = Program.dr[1].ToString();

                    f.textBox3.Text = Program.dr[2].ToString();

                    f.textBox4.Text = Program.dr[3].ToString();
                }


                Program.dr.Close();
                Program.cnx.Close();

                Salarie S = new Salarie();

                dataGridView2.DataSource = S.Act("Congé");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }