将datetime2数据类型转换为日期时间数据错误

时间:2015-09-08 14:16:02

标签: c# datetime

我是MVC的新手,当我尝试保存到数据库时,我收到以下错误

  

将datetime2数据类型转换为日期时间数据类型会导致超出范围的值

型号:

    [Required]
    [Display(Name = "Date")]
    [DataType(DataType.Date)]
    [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:dd/MM/yyyy}")]
    public DateTime Date { get; set; }

控制器:

   [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Create(ReorderContactLenses reorderContactLenses)
    {
        // If Model State is Valie
        if (ModelState.IsValid)
        {
            // Generateds an OrderId 
            reorderContactLenses.OrderId = Guid.NewGuid();

            // Checks if user is logged in 
            if (User.Identity.IsAuthenticated)
            {
                // Gets the UserId
                string userId = User.Identity.GetUserId();

                // Finds PatientId where the Patient.UserId matchs that of the logged in User and assigns the PatientId to reorderContactLenses.PatientId
                reorderContactLenses.PatientId = (from d in db.Patients
                                                  where d.UserId == userId
                                                  select d.PatientId).Single();
            }

            // Sets the reorderContactLense Date to todays Date
            reorderContactLenses.Date = DateTime.Now.Date;
            //Adds reorderContactLenses to the database
            db.ReorderContactLenses.Add(reorderContactLenses);

            // Initilises and Order Status
            OrderStatus orderStatus = new OrderStatus();
            // Generates an Id for the Order Status
            orderStatus.OrderStatusId = new Guid();
            // Assigns the reorderContactLenses OrderId to Order Status OrderId
            orderStatus.OrderId = reorderContactLenses.OrderId;
            // Sets the Ordered Bool to false
            orderStatus.Ordered = false;
            // Adds the Order Status to the Database
            db.OrderStatus.Add(orderStatus);
            //Saves the changes
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        ConfigureCreateView(reorderContactLenses);
        return View(reorderContactLenses);
    }

1 个答案:

答案 0 :(得分:2)

在SQL Server中,datetime不能为空(除非您将其标记为此)并且不能在1753年1月1日之前。您违反了其中一个约束。我没有看到您在DateTime对象中设置OrderStatus属性。我建议那是你的问题。

您可以使用以下内容在数据库中为该特定列设置默认日期:

ALTER TABLE YourTable ADD CONSTRAINT DF_YourTable DEFAULT GETDATE() FOR YourColumn

但是,我不建议这样做,因为在我看来,应该在应用程序中明确声明逻辑,因为你在数据库中隐藏逻辑。