public static MvcHtmlString DataDictionaryDropDownList(this HtmlHelper htmlHelper, string name, object htmlAttributes, List<SelectListItem> selectListItem)        {            return SelectExtensions.DropDownList(htmlHelper, name, selectListItem, htmlAttributes);        }        public static MvcHtmlString DataDictionaryDropDownList(this HtmlHelper htmlHelper, string name, string dataKeyName, object htmlAttributes, string checkedValue = http://www.mamicode.com/null, IDataDictionaryAdapter adapter = null, params SelectListItem[] moreSelectItem)        {            //默认适配器            if (adapter == null) adapter = new DataDictionaryAdapter();            List<SelectListItem> selectListItem = adapter.GetSelectListItem(dataKeyName, checkedValue);            //添加更多选择            if (moreSelectItem != null) selectListItem.InsertRange(0, moreSelectItem);            return DataDictionaryDropDownList(htmlHelper, name, htmlAttributes, selectListItem);        }        public static MvcHtmlString DataDictionaryDropDownList<T>(this HtmlHelper htmlHelper, string name, string dataKeyName, object htmlAttributes, string checkedValue = http://www.mamicode.com/null, IDataDictionaryAdapter adapter = null, Action<T> beforeAction = null, params SelectListItem[] moreSelectItem)        {            //默认适配器            if (adapter == null) adapter = new DataDictionaryAdapter();            List<SelectListItem> selectListItem = adapter.GetSelectListItem<T>(dataKeyName, checkedValue, beforeAction);            //添加更多选择            if (moreSelectItem != null) selectListItem.InsertRange(0, moreSelectItem);            return DataDictionaryDropDownList(htmlHelper, name, htmlAttributes, selectListItem);        }        public static MvcHtmlString ActionLink2(this HtmlHelper htmlHelper, string linkText, string actionName, object routeValues, object htmlAttributes)        {            MvcHtmlString result = LinkExtensions.ActionLink(htmlHelper, linkText, actionName, routeValues, htmlAttributes);            return HtmlDecode(result);        }        public static MvcHtmlString ActionLink2(this HtmlHelper htmlHelper, string linkText, string actionName, string controllerName, object htmlAttributes)        {            MvcHtmlString result = LinkExtensions.ActionLink(htmlHelper, linkText, actionName, controllerName, null, htmlAttributes);            return HtmlDecode(result);        }        public static MvcHtmlString ActionLink2(this HtmlHelper htmlHelper, string linkText, string actionName, string controllerName, object routeValues, object htmlAttributes)        {            MvcHtmlString result = LinkExtensions.ActionLink(htmlHelper, linkText, actionName, controllerName, routeValues, htmlAttributes);            return HtmlDecode(result);        }        private static MvcHtmlString HtmlDecode(MvcHtmlString mvcHtmlString)        {            return new MvcHtmlString(HttpUtility.HtmlDecode(mvcHtmlString.ToHtmlString()));        }