C# 验证使用MVC4中的服务层实现服务器端和客户端验证

嗨，我有一些字段的表雇员

为了验证字段，我创建了两个层

服务层

员工存储库

员工存储库代码为

namespace MvcApplication2.Models
{

    public interface IEmployeeMainTableRepository
    {
        bool CreateEmployee(EMP_MAIN_TBL EmployeeToCreate);
        IEnumerable<EMP_MAIN_TBL> ListEmployees();
    }


    public class EmployeeRepository : MvcApplication2.Models.IEmployeeMainTableRepository
    {
        private EMPLOYEE_SYSTEMEntities _entities = new EMPLOYEE_SYSTEMEntities();


        public IEnumerable<EMP_MAIN_TBL> ListEmployees()
        {
            return _entities.EMP_MAIN_TBL.ToList();
        }


        public bool CreateEmployee(EMP_MAIN_TBL EmployeeToCreate)
        {
            try
            {
              // _entities.AddToEMP_MAIN_TBL(productToCreate);
                _entities.SaveChanges();
                return true;
            }
            catch
            {
                return false;
            }
        }


    }

及

最后，employee Controller包含以下结构

  public class EmployeeController : Controller
    {
        private IEmployeeService _service;

        public EmployeeController()
        {
            _service = new EmployeeService(new ModelStateWrapper(this.ModelState), new EmployeeRepository());
        }

        public EmployeeController(IEmployeeService service)
        {
            _service = service;
        }


        public ActionResult Index()
        {
            return View(_service.ListEmployees());
        }


        //
        // GET: /Product/Create

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

        //
        // POST: /Product/Create

        [AcceptVerbs(HttpVerbs.Post)]
        [HttpPost]
        public ActionResult Create([Bind(Exclude = "EMP_ID")] EMP_MAIN_TBL employeeToCreate)
        {
            if (!_service.CreateEmployee(employeeToCreate))
                return View();
            return RedirectToAction("Index");
        }


    }
}

我的观点是这样的

我的问题是上面的代码对于服务器端验证来说工作得很好

但如何使用上述代码在客户端实现验证呢

---

请

由于您已经在服务端进行验证，您可以返回ModelStateDictionary而不是bool，然后可以检查它在客户端是否有效。 但是，在检查整个服务方法是否已完成时，这并没有帮助，因此您可以创建一个新类型，返回bool和ModelStateDictionary

另一种方法是使用故障异常。您可以创建自己的错误异常，当模型状态无效时将引发该异常。此模型状态错误可能包含您的ModelStateDictionary

因此，你有三个选择

将返回类型更改为ModelStateDictionary

创建新的返回类型以返回结果和ModelStateDictionary

使用模型状态无效时发生的故障异常

---

就我个人而言，我会使用第三种方法，因为您仍然可以使用原始的返回类型，然后只需要捕获错误，就像捕获异常一样。这是一个和

您可以附加一些代码吗我在哪里返回ModelStateDictionary我的想法是我不想将表单发布到服务器端进行验证我想在不使用dataannotation和jquery的情况下在客户端获得验证错误

public interface IValidationDictionary
{
    void AddError(string key, string errorMessage);
    bool IsValid { get; }
}

public class ModelStateWrapper : IValidationDictionary
    {

        private ModelStateDictionary _modelState;

        public ModelStateWrapper(ModelStateDictionary modelState)
        {
            _modelState = modelState;
        }

        #region IValidationDictionary Members

        public void AddError(string key, string errorMessage)
        {
            _modelState.AddModelError(key, errorMessage);
        }

        public bool IsValid
        {
            get { return _modelState.IsValid; }
        }

        #endregion
    }

  public class EmployeeController : Controller
    {
        private IEmployeeService _service;

        public EmployeeController()
        {
            _service = new EmployeeService(new ModelStateWrapper(this.ModelState), new EmployeeRepository());
        }

        public EmployeeController(IEmployeeService service)
        {
            _service = service;
        }


        public ActionResult Index()
        {
            return View(_service.ListEmployees());
        }


        //
        // GET: /Product/Create

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

        //
        // POST: /Product/Create

        [AcceptVerbs(HttpVerbs.Post)]
        [HttpPost]
        public ActionResult Create([Bind(Exclude = "EMP_ID")] EMP_MAIN_TBL employeeToCreate)
        {
            if (!_service.CreateEmployee(employeeToCreate))
                return View();
            return RedirectToAction("Index");
        }


    }
}