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;
}
您可以看到以下链接的完整代码:
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validationContext.MemberName
时,我失败了。我通过将其作为“术语”静态解决了临时修复问题,但它根本不是修复。
那么,从validationContext
检索属性名称的方法是什么?
答案 0 :(得分:2)
validationContext.DisplayName可以解决这个问题吗?
然后您可以反思以获取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?