Asp.net mvc 2 向MVC2中的自定义数据注释属性显示自定义客户端错误消息

我在MVC2中创建了一个名为remoteVal的自定义远程数据注释属性，如下所示

public class remoteValAttribute:ValidationAttribute
{
    public string Action { get; set; }
    public string Controller { get; set; }
    public string ParameterName { get; set; }
    public string RouteName { get; set; }

    public override bool IsValid(object value)
    {
        return true;
    }
}

适配器类

public class RemoteAttributeAdapter:DataAnnotationsModelValidator<remotevalAttribute>
{
    public RemoteAttributeAdapter(ModelMetadata metadata, ControllerContext context, remoteVal attribute) : base(metadata, context, attribute) { }

    public override IEnumerable<ModelClientValidationRule> GetClientValidationRules()
    {
        ModelClientValidationRule rule = new ModelClientValidationRule()
        {
            ErrorMessage = ErrorMessage,
            ValidationType = "remoteVal"
        };

        rule.ValidationParameters["url"] = GetUrl();
        rule.ValidationParameters["parameterName"] = Attribute.ParameterName;
        return new ModelClientValidationRule[] { rule };
    }

    private string GetUrl()
    {
        RouteValueDictionary rvd = new RouteValueDictionary(){
            {"controller",Attribute.Controller},
            {"action",Attribute.Action}
        };

        var virtualPath = RouteTable.Routes.GetVirtualPath(ControllerContext.RequestContext, Attribute.RouteName, rvd);
        if (virtualPath == null)
        {
            throw new InvalidOperationException("No route matched!");
        }

        return virtualPath.VirtualPath;
    }
}

添加jQuery脚本如下

<script type="text/javascript" src="../../Scripts/jquery-1.4.1.min.js"></script>
<script type="text/javascript" src="../../Scripts/jquery.validate.js"></script>
<script type="text/javascript" src="../../Scripts/MicrosoftMvcJQueryValidation.js"></script>
<script type="text/javascript">
        $(function () {
            var ermessage = '';
            jQuery.validator.addMethod("remoteVal", function (value, element, params) {
                var validator = this;
                var valid = false;
                if (this.optional(element)) {
                    return true;
                }
                else {
                    var url = params.url;
                    var parameterName = params.parameterName;

                    var newUrl = ((url.indexOf('?') < 0) ? (url + '?') : (url + '&'))
                                + encodeURIComponent(parameterName) + '=' + encodeURIComponent(value);

                    var response = $.ajax({
                        url: newUrl,
                        async: false
                    }).responseText;

                    if (response == 'OK')
                        valid = true;
                    else {
                        valid = false;
                        var errors = {};
                        errors[element.name] = response;
                        validator.showErrors(errors);
                    }
                }
                return valid;
            });
        });
</script>

$（函数（）{
var-ermessage=''；
jQuery.validator.addMethod（“remoteVal”，函数（值、元素、参数）{
var验证器=此；
var-valid=false；
if（此.可选（元素））{
返回true；
}
否则{
var url=params.url；
var parameterName=params.parameterName；
var newUrl=（（url.indexOf（'？'）<0）？（url+'？'）：（url+'&'））
+encodeURIComponent（参数名称）+'='+encodeURIComponent（值）；
var响应=$.ajax({
url:newUrl，
异步：false
}).responseText；
如果（响应=‘确定’）
有效=真；
否则{
有效=错误；
var错误={}；
错误[element.name]=响应；
验证程序错误（错误）；
}
}
返回有效；
});
});

如果标题已经注册，来自AJAX调用的响应将显示为错误消息。但是错误总是显示为字段标题无效。请帮我解决这个问题

<script type="text/javascript" src="../../Scripts/jquery-1.4.1.min.js"></script>
<script type="text/javascript" src="../../Scripts/jquery.validate.js"></script>
<script type="text/javascript" src="../../Scripts/MicrosoftMvcJQueryValidation.js"></script>
<script type="text/javascript">
        $(function () {
            var ermessage = '';
            jQuery.validator.addMethod("remoteVal", function (value, element, params) {
                var validator = this;
                var valid = false;
                if (this.optional(element)) {
                    return true;
                }
                else {
                    var url = params.url;
                    var parameterName = params.parameterName;

                    var newUrl = ((url.indexOf('?') < 0) ? (url + '?') : (url + '&'))
                                + encodeURIComponent(parameterName) + '=' + encodeURIComponent(value);

                    var response = $.ajax({
                        url: newUrl,
                        async: false
                    }).responseText;

                    if (response == 'OK')
                        valid = true;
                    else {
                        valid = false;
                        var errors = {};
                        errors[element.name] = response;
                        validator.showErrors(errors);
                    }
                }
                return valid;
            });
        });
</script>