System.Web.Mvc.HtmlHelper'不包含定义'ActionLink的“ [英] System.Web.Mvc.HtmlHelper' does not contain a definition for 'ActionLink'

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问题描述

我想使用自定义@ Html.ActionLink

我尝试使用下面的code: -

 公共静态类LinkExtensions
{
    公共静态MvcHtmlString MyActionLink(
        这个的HtmlHelper的HtmlHelper,
        串LINKTEXT,
        串动,
        串控制器)
    {
        VAR currentAction = htmlHelper.ViewContext.RouteData.GetRequiredString(行动);
        VAR currentController = mlHelper.ViewContext.RouteData.GetRequiredString(控制器);        如果(动作== currentAction&放大器;&安培;控制器== currentController)
        {
          变种锚=新TagBuilder(一);
          anchor.Attributes [HREF] =#;
          anchor.AddCssClass(currentPageCSS);
          anchor.SetInnerText(LINKTEXT);
          返回MvcHtmlString.Create(anchor.ToString());
         }         返回htmlHelper.ActionLink(LINKTEXT,动作,控制器);
    }
}

从<一个href=\"http://stackoverflow.com/questions/5084635/custom-actionlink-helper-that-knows-what-page-youre-on\">Custom ActionLink的帮手知道你在什么页

但我正在逐渐


  

System.Web.Mvc.HtmlHelper'不包含一个定义
  ActionLink的',没有扩展方法'ActionLink的接受第一
  类型'System.Web.Mvc.HtmlHelper的说法可以找到(你
  缺少using指令或程序集引用?



解决方案

将此使用System.Web.Mvc.Html;你的文件顶部

I would like to use custom @Html.ActionLink

I am trying to use the following code:-

public static class LinkExtensions
{
    public static MvcHtmlString MyActionLink(
        this HtmlHelper htmlHelper, 
        string linkText, 
        string action, 
        string controller)
    {
        var currentAction = htmlHelper.ViewContext.RouteData.GetRequiredString("action");
        var currentController = mlHelper.ViewContext.RouteData.GetRequiredString("controller");

        if (action == currentAction && controller == currentController)
        {
          var anchor = new TagBuilder("a");
          anchor.Attributes["href"] = "#";
          anchor.AddCssClass("currentPageCSS");
          anchor.SetInnerText(linkText);
          return MvcHtmlString.Create(anchor.ToString());
         }

         return htmlHelper.ActionLink(linkText, action, controller);
    }
}

From Custom ActionLink helper that knows what page you're on

But I am getting

System.Web.Mvc.HtmlHelper' does not contain a definition for 'ActionLink' and no extension method 'ActionLink' accepting a first argument of type 'System.Web.Mvc.HtmlHelper' could be found (are you missing a using directive or an assembly reference?

解决方案

Add this using System.Web.Mvc.Html; on top of your file

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