public void RemplirGrid()
        {
            OleDbDataReader dr = service.AffichageListeCompany();

            System.Data.DataTable dt = new System.Data.DataTable();
            dt.Load(dr);

            foreach (System.Data.DataRow row in dt.Rows)
            {
                dataGridView1.Rows.Add(row["Num"].ToString(), row["NomSoc"].ToString(),
                                       row["CodeSoc"].ToString());
            }
        }