public JsonResult Delete(int id) { return(this.Visit(EnumUserRole.Admin, () => { try { tb_node_dal dal = new tb_node_dal(); using (DbConn PubConn = DbConn.CreateConn(Config.TaskConnectString)) { PubConn.Open(); bool state = dal.DeleteOneNode(PubConn, id); return Json(new { code = 1, state = state }); } } catch (Exception ex) { return Json(new { code = -1, msg = ex.Message }); } })); }