MVC中的HtmlHelpers 6

Question

我试图将此代码移植到mvc 6，任何帮助表示赞赏，代码编译但该方法在@Html.IsActive我的视图中不可用。

using Microsoft.AspNet.Mvc.Rendering; 

namespace Blah.Web.Helpers 
{ 
    public static class HtmlHelpers 
    { 

     public static string IsActive(this HtmlHelper htmlHelper, string controller, string action) 
     { 
      var routeData = htmlHelper.ViewContext.RouteData; 

      var routeAction = routeData.Values["action"].ToString(); 
      var routeController = routeData.Values["controller"].ToString(); 

      var returnActive = (controller == routeController && action == routeAction); 

      return returnActive ? "active" : ""; 
     } 

    } 
} 

在查看我引用的命名空间：

@using Blah.Web.Helpers; 

Answer 1

在方法签名，HtmlHelper应该是IHtmlHelper

见下面的例子

namespace Blah.Web.Helpers 
{ 
    public static class HtmlHelpers 
    { 
     public static string IsActive(this IHtmlHelper htmlHelper, string controller, string action) 
     { 
      var routeData = htmlHelper.ViewContext.RouteData; 

      var routeAction = routeData.Values["action"].ToString(); 
      var routeController = routeData.Values["controller"].ToString(); 

      return (controller == routeController && action == routeAction) ? "active" : ""; 
     } 
    } 
}