如何在ASP.NET MVC中获取控制器中的路由名称？

string routeName = this.RouteData.Values["action"].ToString();

UrlHelper urlHelper = new UrlHelper(this.ControllerContext.RequestContext);
string routeName = urlHelper.Action("ActionName", "ControllerName");

HttpContext context = HttpContext.Current;
string routeName = context.Request.RequestContext.RouteData.Values["action"].ToString();