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decimal(18,10)我在我的数据库中定义了经度和纬度的数据类型。但是 当我尝试输入并提交我的表单时，它总是说“验证错误” 。我用过LINQ to SQL。它是否为我生成了一些验证规则，否则为什么我不能用“2.34”之类的数字输入这两个。

提前致谢

namespace Nerddinner.Models
{
    interface IDinnerRepository
    {
        IQueryable<Dinner> FindAllDinners();
        Dinner GetDinner(int id);
        void AddDinner(Dinner dinner);
        void UpdateDinner(Dinner dinner);
        void DeleteDinner(Dinner dinner);
    }
}


namespace Nerddinner.Models
{
    public class sqlDinnerRepository: IDinnerRepository
    {
        dbDataContext db;
        public sqlDinnerRepository()
        {
            db = new dbDataContext();
        }

        public IQueryable<Dinner> FindAllDinners()
        {
            return db.Dinners;
        }

        public Dinner GetDinner(int id)
        {
            return db.Dinners.SingleOrDefault(x => x.DinnerID == id);
        }

        public void AddDinner(Dinner dinner)
        {
            db.Dinners.InsertOnSubmit(dinner);
        }

        public void UpdateDinner(Dinner dinner)
        {
            db.SubmitChanges();
        }

        public void DeleteDinner(Dinner dinner)
        {
            db.Dinners.DeleteOnSubmit(dinner);
        }
    }
}


namespace Nerddinner.Controllers
{
    public class DinnerController : Controller
    {
        IDinnerRepository _repository;
        public DinnerController()
        {
            _repository = new sqlDinnerRepository();
        }

        public DinnerController(IDinnerRepository repository)
        {
            _repository = repository;
        }

        //
        // GET: /Dinner/

        public ActionResult Index()
        {
            var dinners = _repository.FindAllDinners();
            return View(dinners);
        }

        //
        // GET: /Dinner/Details/5

        public ActionResult Details(int id)
        {
            var dinner = _repository.GetDinner(id);
            return View(dinner);
        }

        //
        // GET: /Dinner/Create

        public ActionResult Create()
        {
            return View();
        } 

        //
        // POST: /Dinner/Create

        [HttpPost]
        public ActionResult Create(Dinner dinner)
        {
            try
            {
                // TODO: Add insert logic here
                _repository.AddDinner(dinner);
                _repository.UpdateDinner(dinner);

                return RedirectToAction("Index");
            }
            catch
            {
                return View(dinner);
            }
        }

        //
        // GET: /Dinner/Edit/5

        public ActionResult Edit(int id)
        {
            var dinner = _repository.GetDinner(id);
            return View(dinner);
        }

        //
        // POST: /Dinner/Edit/5

        [HttpPost]
        public ActionResult Edit(int id, FormCollection collection)
        {

            var db = new dbDataContext();
            var dinner = db.Dinners.SingleOrDefault(x => x.DinnerID == id);
            try
            {
                // TODO: Add update logic here
                UpdateModel(dinner, collection.ToValueProvider());
                _repository.UpdateDinner(dinner);
                return RedirectToAction("Index");
            }
            catch
            {
                return View(dinner);
            }
        }

        //
        // POST: /Dinner/Delete/5

        [HttpPost]
        public ActionResult Delete(int id)
        {
            var db = new dbDataContext();
            var dinner = db.Dinners.SingleOrDefault(x => x.DinnerID == id);
            try
            {
                // TODO: Add delete logic here
                _repository.DeleteDinner(dinner);
                _repository.UpdateDinner(dinner);
                return RedirectToAction("Index");
            }
            catch
            {
                return View(dinner);
            }
        }
    }
}

谢谢你帮助我。

4

1 回答 1

1

在ASP.NET MVC中，您可以在模型属性上使用 DisplayFormatAttribute：

[DisplayFormat(DataFormatString = "{0:0.##}")]
public decimal decimalNumber { get; set; }

以上将输出一个最多有 2 位小数的数字。有关更多信息，请访问：自定义数字格式字符串和标准数字格式字符串

在 SQL SERVER 中： * decimal(m,a) *：m 是您的小数可以拥有的总位数，而 a 是您可以拥有的最大小数点数。

所以如果你把 PI 放入 Decimal(18,0) 它将被记录为 3

如果您将 PI 放入小数（18,2），它将被记录为 3.14

如果将 PI 转换为 Decimal(18,10) 记录为 3.1415926535

我想我的回答会对你有所帮助。如果我错了，请纠正我。

于 2013-05-25T10:31:20.477 回答