相关疑难解决方法(0)

我正在尝试使用客户端验证来实现自定义验证属性.

我的属性如下:

public class FileSize : ValidationAttribute, IClientValidatable
{
    private readonly int _size;

    public FileSize(int size)
    {
        ErrorMessage = "Invalid size.";
        _size = size;
    }

    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
    {
        var rule = new ModelClientValidationRule
        {
            ValidationType = "fileSize",
            ErrorMessage = ErrorMessage
        };

        rule.ValidationParameters["size"] = _size;

        yield return rule;
    }

    public override bool IsValid(object value)
    {
        return ((HttpPostedFileBase) value).ContentLength < _size;
    }
}

并且脚本在我的视图中包含如下内容:

<script src="@Url.Content("~/Scripts/jquery-1.4.4.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.js")" type="text/javascript"></script>
<script type="text/javascript">
    $(function () { …