asp.net-mvc – 如何从视图中检索传递给我的自定义EditorFor的对

我试图通过扩展ASP.NET MVC 2 HtmlHelper来创建自己的EditorFor方法.我有以下内容：

public static string EditorForNew<TModel,TProperty>(this HtmlHelper<TModel> helper,Expression<Func<TModel,TProperty>> item)
    {
        string value = "";
        string name = item.ToString(); // THIS IS CORRECTED IN MY COMMENT TO THE ANSWER BELOW!
        Type type = typeof(TProperty);

        if (type == typeof(int) || type == typeof(int?) || type == typeof(double) || type == typeof(double?) || type == typeof(decimal) || type == typeof(decimal?) || type == typeof(float) || type == typeof(float?))
        {
            return helper.TextBox(name,value,new { @class = "number" }).ToString();
        }
        else
        {
            return helper.TextBox(name,value).ToString();
        }
    }

任何人都可以解释我如何检索从视图传递给它的对象属性的VALUE？