asp.net-mvc – HtmlHelper获取路由名称

public static string MenuItem( this HtmlHelper helper,string linkText,string actionName,string controllerName,object routeValues,object htmlAttributes )
{
    string currentControllerName = 
     ( string )helper.ViewContext.RouteData.Values["controller"];
    string currentActionName = 
     ( string )helper.ViewContext.RouteData.Values["action"];

    var builder = new TagBuilder( "li" );

    // Add selected class
    if ( currentControllerName.Equals( controllerName,StringComparison.CurrentCultureIgnoreCase ) && 
          currentActionName.Equals( actionName,StringComparison.CurrentCultureIgnoreCase ) )
        builder.AddCssClass( "active" );

    // Add link
    builder.InnerHtml = helper.ActionLink( linkText,actionName,controllerName,routeValues,htmlAttributes );

    // Render Tag Builder
    return builder.ToString( TagRenderMode.Normal );
}

我想扩展这个类,以便我可以将路由名称传递给帮助程序,如果用户在该路由上,则将css类添加到li项目.但是我很难找到用户所在的路线.这可能吗？我到目前为止的代码是：

public static string MenuItem( this HtmlHelper helper,string routeName,object htmlAttributes )
{
    string currentControllerName = 
      ( string )helper.ViewContext.RouteData.Values["controller"];
    string currentActionName = 
      ( string )helper.ViewContext.RouteData.Values["action"];

    var builder = new TagBuilder( "li" );

    // Add selected class
    // Some code for here
    // if ( routeName == currentRoute ) AddCssClass;

    // Add link
    builder.InnerHtml = helper.RouteLink( linkText,routeName,htmlAttributes );

    // Render Tag Builder
    return builder.ToString( TagRenderMode.Normal );
}

顺便说一下,我正在使用MVC 1.0.

谢谢