我有一个自定义的数据验证属性,我已经创建,以确保用户输入的密码相同,但从不调用IsValid。自定义数据注释IsValid永远不会被调用。 (ASP.NET MVC 2 .NET 4)
自定义属性:
public class IsSameAsAttribute : ValidationAttribute
{
public String TargetProperty { get; set; }
private readonly object _typeId = new object();
public IsSameAsAttribute(string targetProperty)
{
TargetProperty = targetProperty;
}
public override bool IsValid(object value)
{
return false;
//Type objectType = value.GetType();
//bool isValid = false;
//PropertyInfo[] neededProperties =
// objectType.GetProperties().Where(propertyInfo => propertyInfo.Name == TargetProperty).ToArray();
//return isValid;
}
public override object TypeId
{
get { return _typeId; }
}
}
数据模型将它应用到:
public class RegistrationData
{
[Required(ErrorMessage = "First Name Required")]
[StringLength(100, ErrorMessage = "First Name must be 100 characters or less.")]
public String FirstName { get; set;}
[Required(ErrorMessage = "Last Name Required")]
[StringLength(100, ErrorMessage = "Last Name must be 100 characters or less.")]
public String LastName { get; set; }
[Required(ErrorMessage = "Email is Required")]
[StringLength(200, ErrorMessage = "Email must be 200 characters or less.")]
[RegularExpression(@"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*", ErrorMessage = "Valid Email Address is required.")]
public String Email { get; set; }
[Required(ErrorMessage = "Password is required")]
public String Password { get; set; }
[IsSameAs("Password")]
public String PasswordRepeat { get; set; }
[Required(ErrorMessage = "Division is required")]
public String Division { get; set; }
}
而且,它从叫做控制器:
[HttpPost]
public ActionResult ValidationDemo(RegistrationData model)
{
if (ModelState.IsValid)
{
return Redirect("/");
}
return View(model);
}
所有“开箱即用”的验证操作都是正确的,它只是我自定义的一个,没有被调用。在进行调试时,我发现它在调用构造函数时被实例化,但IsValid上的断点永远不会被打中。
怎么回事,我该如何解决?
UPDATE
好吧,我摆弄一些,如果我在我的控制器调用TryUpdateModel(模型),它最终调用的IsValid。所以这意味着我的自定义属性没有得到任何运行MVC 2验证的“注册”。有没有办法解决这个问题?
[HttpPost]
public ActionResult ValidationDemo(RegistrationData model)
{
TryValidateModel(model); // <--- *** Added this line and it "works"
if (ModelState.IsValid)
{
return Redirect("/");
}
return View(model);
}
你有没有注册一个适配器与你的自定义验证属性一起使用'DataAnnotationsModelValidatorProvider.RegisterAdapter'? – 2011-05-10 21:44:35