如何识别Controller Action Method中使用的Actionfilter？

Question

OnActionExecuting会在某项操作即将执行时触发。

如果我的动作有actionfilter

[myCustomActionFilter]
public ActionResult MyAction()
{
//implementation
}

是否可以确定（OnActionExecuting事件内）某个操作已应用myCustomActionFilter？

Answer 1

上述方法区分大小写。

public void OnActionExecuting(ActionExecutingContext filterContext)
{
    var actionDescriptor = filterContext.ActionDescriptor;
    if (actionDescriptor.IsDefined(typeof(myCustonActionFilter), true))
    {
        var attributeInstance = (myCustomActionFilter) actionDescriptor.GetCustomAttributes(typeof(myCustomActionFilter), true);

    }   
}

Answer 2

     public void OnActionExecuting(ActionExecutingContext filterContext)
            {
                var controllerType = filterContext.Controller.GetType();
                var actionMethod = controllerType.GetMethod(filterContext.ActionDescriptor.ActionName);
                if (actionMethod.IsDefined(typeof(myCustomActionFilter),true))
                {
                    var attributeInstance =
                        (myCustomActionFilter) actionMethod.GetCustomAttributes(typeof (myCustomAct   
ionFilter), true);
        }