MVC中如何获取控制器的名称

string controller =ViewContext.RouteData.Route.GetRouteData(this.Context).Values["controller"].ToString();
string controller = ViewContext.RouteData.Values["controller"].ToString();

string controller = RouteData.Route.GetRouteData(this.HttpContext).Values["controller"].ToString();
string controller = RouteData.Values["controller"].ToString();

/// <summary>
/// 过滤器中
/// </summary>
/// <param name="filterContext"></param>
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
base.OnActionExecuting(filterContext);
　 string controller = filterContext.RouteData.Values["controller"].ToString();
controller = controller + "Controller";
}

/// <summary>
/// 获取当前页面的Controller全名称
/// </summary>
/// <returns></returns>
public string GetCurrentController()
{
string controller = HttpContext.Current.Request.RequestContext.RouteData.Values["controller"].ToString();
if (!string.IsNullOrWhiteSpace(controller))
{
controller = controller + "Controller";
}
else
{
controller = "";
}
return controller;
}