MVC扩展Url.Action方法解决复杂对象参数问题

1:问题描述

　　@Url.Action("Index", "Home", new { Key = "Key", Val = new { Name = "TypeDescriptor" } })

　　 期望结果: /Home/Index?Key=Key&Name=TypeDescriptor

　　 实际结果: /Home/Index?Key=Key

2.解决方案

　　

        /// <summary>
        /// 递归算法
        /// </summary>
        /// <param name="dictionary">dictionary</param>
        /// <param name="values">values</param>
        public static void GetProperties(RouteValueDictionary dictionary, object values)
        {
            foreach (PropertyDescriptor descriptor in TypeDescriptor.GetProperties(values))
            {
                object obj = descriptor.GetValue(values);
                if (obj != null)
                {
                    Type type = obj.GetType();
                    if (!type.IsValueType && type != typeof(string))
                    {
                        GetProperties(dictionary, obj);
                    }
                    if (type.IsValueType || type == typeof(string))
                    {
                        if (dictionary.ContainsKey(descriptor.Name))
                        {
                            dictionary[descriptor.Name] = obj;
                        }
                        else
                        {
                            dictionary.Add(descriptor.Name, obj);
                        }
                    }
                }
            }
        }

        /// <summary>
        /// Action
        /// </summary>
        /// <param name="urlHelper">urlHelper</param>
        /// <param name="actionName">actionName</param>
        /// <param name="controllerName">controllerName</param>
        /// <param name="routeValues">routeValues</param>
        /// <returns>string</returns>
        public static string Action(this UrlHelper urlHelper, string actionName, string controllerName, object routeValues)
        {
            RouteValueDictionary dictionary = new RouteValueDictionary();
            GetProperties(dictionary, routeValues);
            return UrlHelper.GenerateUrl(null, actionName, controllerName, dictionary, urlHelper.RouteCollection, urlHelper.RequestContext, true);
        }