public void count_dmt_stud() { AccessDb dbcon = new AccessDb(); DataSet ds = dbcon.execDataTable("SELECT count(*) as `total` from personal where `course`='DMTE'"); if (dbcon.ds.Tables[0].Rows.Count > 0) { lbl_dmt_count.Text = dbcon.ds.Tables[0].Rows[0]["total"].ToString(); } }