我用MVC模式向数据表中添加数据哪里出了问题？我刚刚接触MVC大家帮帮忙

Question

  [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult Create(string StuId, FormCollection collection)
        {
           
            try
            {
                // TODO: Add insert logic here                var model = student.StudentInfo.FirstOrDefault(c => c.StuId == StuId);
                if (model == null)
                {
                    StudentInfo stu = new StudentInfo();
                    UpdateModel(stu, new string[] { "StuId", "StuName", "StuGender", "StuDept" });
                    student.SaveChanges();
                    return RedirectToAction("Index");
                }
                else
                {
                    return RedirectToAction("Create");
                }
                
            }
            catch
            {
                return View();
            }
        }

Answer 1

用的是ADO.net Entity data Model

Answer 2

updatemodel（）是干嘛的？
 不是应该是student.AddStudentInfo(studentinfomodel );student.savechanges()

Answer 3

studentinfomodel是什么啊，是StudentInfo 对象吗

Answer 4

//db 是ef   Data是实体
 Data dataDb = db.Data.Single(d => d.Id == data.Id);                dataDb.DataName = data.DataName;
                dataDb.CallStartTime = data.CallStartTime;
                dataDb.CallEndTime = data.CallEndTime;
                dataDb.Re = data.Re;                dataDb.UpdateTime = DateTime.Now;
                dataDb.UpdateUserId = UserInfo.Id;
                db.SaveChanges();

Answer 5

谢谢啦，太感谢啦，我用这个student.AddStudentInfo(studentinfomodel );student.savechanges()解决啦