批量添加代码，修改，删除控制器部分

 public class HomeController : Controller
    {
        bll s = new bll();引用

//显示
        public ActionResult studentlist()
        {
            return View();
        }
        [HttpPost]
        public ActionResult StudentList1()
        {
            var result = new BLL.bll().Show();
            return Json(result);
        }

添加
        [HttpPost]
        public JsonResult Studentadd(string a)
        {
             a = a.TrimEnd('|');
            string[] ste = a.Split('|');
            if (ste == null||ste.Length==0)
            {
                return Json(new
                {
                    code=0,
                    msg="字符串异常"
                });

            }
            else
            {
                List<model> studentlist = new List<model>();
                foreach (var item in ste)
                {
                    string[] y = item.Split(',');
                    if (y != null || y.Length > 0)
                    {
                        model si = new model();
                        si.Sxuehao = y[0];
                        si.SNAME = y[1];
                        si.SAGE = y[2];
                        studentlist.Add(si);

                    }

                }
                var i = s.addlist(studentlist);
                if (i > 0)
                {
                    return Json(new
                    {
                        code = 1,
                        msg = "成功"
                    });
                }
                else
                {
                    return Json(new
                    {
                        code = 0,
                        msg = "失败"
                    });

                }

            }
           

        }

删除
        public JsonResult del(int id)
        {
            var result = new BLL.bll().del(id);
            if (result > 0)
            {
                return Json(1);
            }
            else
            {
                return Json(0);
            }

        }

修改
        public JsonResult update(model stu)
        {
            var result = s.uptate(stu);
            if (result > 0)
            {
                return Json(new
                {
                    code = 1,
                    msg = "成功"
                });

            }
            else
            {
                return Json(new
                {
                    code = 0,
                    msg = "失败"
                });
            }
        }
        public ActionResult About()
        {
            ViewBag.Message = "Your application description page.";

            return View();
        }

        public ActionResult Contact()
        {
            ViewBag.Message = "Your contact page.";

            return View();
        }
    }