public void cantrecibo() { int cxr = Convert.ToInt32(Session["numeroitems"]); try { String bd = Session["BD"].ToString(); var registros = Controlasql.Clista_count_recibo(Session["numeroOC"].ToString(), bd); if (registros.Tables[0].Rows.Count > 0) { dt = registros.Tables[0]; foreach (DataRow row in dt.Rows) { var cantR = Convert.ToInt32(row[0]); var total = cxr - cantR; } } else { } } catch (Exception e) { alerta.MessageBox(this, "Excepcion controlada:" + e.Message); } }