Question

我创建了自定义ASP.Net MVC模型验证，如下所示：

internal class LocalizedRequiredAttribute : RequiredAttribute, IClientValidatable 
{
    public List<string> DependentProperties { get; private set; }
    public List<string> DependentValues { get; private set; }
    public string Props { get; private set; }
    public string Vals { get; private set; }
    public string RequiredFieldValue { get; private set; }

    public LocalizedRequiredAttribute(string resourceId = "")
    {
        if (string.IsNullOrEmpty(resourceId))
            ErrorMessage = ResourcesHelper.GetMessageFromResource("RequiredValidationErrorMessage");
        else
            ErrorMessage = ResourcesHelper.GetMessageFromResource(resourceId);
    }

    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
    {
        string msg = FormatErrorMessage(metadata.GetDisplayName());
        yield return new ModelClientValidationRequiredRule(msg); //Exception
    }
}
internal class LocalizedNumericRegularExpressionAttribute : RegularExpressionAttribute, IClientValidatable 
{
    public LocalizedNumericRegularExpressionAttribute(string resourceId = "") : base(@"^\d+$")
    {
        if (string.IsNullOrEmpty(resourceId))
            ErrorMessage = ResourcesHelper.GetMessageFromResource("NumberRequiredValidationErrorMessage");
        else
            ErrorMessage = ResourcesHelper.GetMessageFromResource(resourceId);
    }

    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
    {
        string msg = FormatErrorMessage(metadata.GetDisplayName());
        yield return new ModelClientValidationRequiredRule(msg); //Exception
    }
}

以下是我的模特：

public class MyModel
{
   [LocalizedRequired]
   [LocalizedNumericRegularExpression]
   public int Emp_No { get; set; }
}

每当我使用上面的模型导航到表单时，就会发生以下异常。

Validation type names in unobtrusive client validation rules must be unique. The following validation type was seen more than once: required

如果删除IClientValidatable，

上面的代码就可以，但客户端验证不起作用。

我的代码出了什么问题？

Answer 1

我找到了解决方案，我们必须在global.asax

中的Application_Start中添加以下代码

DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(LocalizedRequiredAttribute), typeof(RequiredAttributeAdapter));
DataAnnotationsModelValidatorProvider.RegisterAdapter(typeof(LocalizedNumericRegularExpressionAttribute), typeof(RegularExpressionAttributeAdapter));

Answer 2

您将ValidationType的值与MVC自动验证相同。因此，您必须更改ValidationType =＆＃34; name unique＆＃34;的值。在ModelClientValidationRule或其派生类中。名称应该避免MVC自动生成名称，例如＆＃39; date＆＃39;，＆＃39; required＆＃39; ... 其他解决方案是通过将这些代码放在app start

来关闭自动验证

DataAnnotationsModelValidatorProvider.AddImplicitRequiredAttributeForValueTypes = false;

不显眼的客户端验证规则中的验证类型名称必须是唯一的。以下验证类型不止一次出现：必需

2 个答案: