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对于我的 ASP.NET MVC 项目,我创建了一个自定义验证属性。这是我正在努力的代码:

  protected override ValidationResult IsValid(object value, ValidationContext validationContext) {

        //Here I need to resolve the url in order to make a call to that controller action and get the JSON result back

        var httpContext = new HttpContextWrapper(HttpContext.Current);
        var urlHelper = new UrlHelper(
            new System.Web.Routing.RequestContext(
                httpContext, new System.Web.Routing.RouteData()
            )
        );
        var url = urlHelper.Action(Action, Controller, null, 
            urlHelper.RequestContext.HttpContext.Request.Url.Scheme);

        var fullUrl = string.Format("{0}?{1}={2}", url, 
            /*validationContext.MemberName*/"term", value);

        if (!GetResult(fullUrl)) {

            var message = FormatErrorMessage(validationContext.DisplayName);
            return new ValidationResult(message);
        }

        return null;
    }

您可以从以下链接查看完整代码:

https://bitbucket.org/tugberk/tugberkug.mvc/src/6cc3d3d64721/TugberkUg.MVC/Validation/ServerSideRemoteAttribute.cs

对于fullUrl变量,我试图将属性名称附加到查询字符串,但是当我使用时validationContext.MemberName,我失败了。我通过将其设为静态作为“术语”解决了临时修复的问题,但它根本不是修复。

那么,从 中检索属性名称的方法是什么validationContext

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1 回答 1

2

validationContext.DisplayName 能解决问题吗?

然后,您可以反映以获取 MemberName

var displayName = validationContext.DisplayName;

var memberName = validationContext.ObjectType.GetProperties()
    .Where(p => p.GetCustomAttributes(false).OfType<DisplayAttribute>().Any(a => a.Name == displayName))
    .Select(p => p.Name)
    .FirstOrDefault();

可能吗?

于 2011-11-17T12:38:39.670 回答