Asp.net mvc Can'；t在.NET MVC客户端验证上访问ValidationParameters

我正在为.NETMVC4应用程序编写自定义验证代码。这是第一次使用参数进行验证，我发现要得到它有些麻烦

这是我的C#代码：

验证属性：

namespace Validations
{
    [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, AllowMultiple = false, Inherited = true)]
    public class MinRequiredPasswordLengthValidationAttribute : ValidationAttribute, IClientValidatable
    {
        public MinRequiredPasswordLengthValidationAttribute()
        : base("The password is invalid")
        {

        }

        public override string FormatErrorMessage(string name)
        {
            return String.Format(CultureInfo.CurrentCulture, ErrorMessageString, name.ToLower(), Membership.MinRequiredPasswordLength);
        }

        public override bool IsValid(object value)
        {
            if (value == null || String.IsNullOrEmpty(value.ToString()))
            {
                return true;
            }

            return value.ToString().Length >= Membership.MinRequiredPasswordLength;
        }

        public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
        {
            ModelClientMinRequiredPasswordLengthValidationRule rule = new ModelClientMinRequiredPasswordLengthValidationRule(FormatErrorMessage(metadata.GetDisplayName()), Membership.MinRequiredPasswordLength);
            yield return rule;
        }
    }
}

下面是JS代码，我的问题：

jQuery.validator.addMethod("minrequiredpasswordlength", function (value, element, params) {
    if (value.length == 0) {
        return true; //empty
}

return true; //dummy return
}, "");

jQuery.validator.unobtrusive.adapters.add("minrequiredpasswordlength", {}, function (options) {
    //XXX Here I should get the minlength parameter, but 'options' is a empty object
    options.messages["minrequiredpasswordlength"] = options.message;
});

---

非常感谢你的帮助

查看此链接是否有帮助：

另外，请尝试将javascript代码更改为：

$.validator.addMethod('minrequiredpasswordlength', function (value, element, params) {
    var minLength = params.minLength;

    // minLength should contain your value.
    return true; // dummy return
});

jQuery.validator.unobtrusive.adapters.add('minrequiredpasswordlength', [ 'minlength' ], function (options) {

    options.rules['minrequiredpasswordlength'] = {
            minLength: options.params['minlength']
        };

    //XXX Here I should get the minlength parameter, but 'options' is a empty object
    options.messages["minrequiredpasswordlength"] = options.message;
});

---

这里的秘密是用['minlength']代替{}当我第一次学会这个时，我花了很多时间。我希望这能有所帮助。

终于！在这段时间之后，我最终使用了另一种方法，即从HTML属性中获取minLength，而不是从“params”中获取minLength。但是这个解决方案要好得多，谢谢！是的，将参数传递给客户端的过程没有很好的文档记录。我在网上的其他地方找到了它，同时搜索其他任何东西。我希望这可以帮助其他人（包括我自己）在未来。当做

$.validator.addMethod('minrequiredpasswordlength', function (value, element, params) {
    var minLength = params.minLength;

    // minLength should contain your value.
    return true; // dummy return
});

jQuery.validator.unobtrusive.adapters.add('minrequiredpasswordlength', [ 'minlength' ], function (options) {

    options.rules['minrequiredpasswordlength'] = {
            minLength: options.params['minlength']
        };

    //XXX Here I should get the minlength parameter, but 'options' is a empty object
    options.messages["minrequiredpasswordlength"] = options.message;
});