使用HtmlHelper访问复杂的数据属性

Question

我在MVC中编写类似于DisplayFor的扩展助手，但我的优点是它将从资源文件中检索实际的属性名称。

public class Gender
    {
       public int Id{get;set;}
       public string Name{get; set;}
       public string ArabicName{get;set;}
    }

public class Employee
{
    public int Id{get;set;}
    public string Name{get;set;}
    public string ArabicName{get;set;}
    public Gender Gender{get;set;}
}

public static MvcHtmlString DisplayResourceFor<TModel, TValue>(this HtmlHelper<TModel> helper,
            Expression<Func<TModel, TValue>> expression)
        {
            var rm = new ResourceManager("Resources.Global",
                System.Reflection.Assembly.Load("App_GlobalResources"));                
            var property = ExpressionHelper.GetExpressionText(expression);
            string resourceName = string.Empty;
            var split = property.Split('.');
            property = string.Empty;
            // rebuild the expression taking the last name from the resource file
            for (var index = 0; index < split.Length; index++)
            {
                if (index == split.Length - 1) // retrieve the data from rm
                    property += (string.IsNullOrWhiteSpace(property) ? "" : ".") + rm.GetString(string.Format("{0}Resource", split[index]));
                else
                    property += (string.IsNullOrWhiteSpace(property) ? "" : ".") + split[index];
            }
            var value = helper.ViewContext.ViewData.GetViewDataInfo(property);

            return value == null ? MvcHtmlString.Empty : MvcHtmlString.Create(value.Value.ToString());

        }

上述代码不适用于

等复杂数据

@Html.DisplayResourceFor(model =>model.Gender.Name)

我尝试使用ModelMetadata.FromStringExpression(property,helper.ViewData)，但返回的值为空

我的代码中缺少什么部分？

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