FilterAttribute で FilterScope の違いによる実行順序を確認してみた

FilterConfig.cs

using System.Web;
using System.Web.Mvc;

namespace MvcApp {
	public class FilterConfig {
		public static void RegisterGlobalFilters(GlobalFilterCollection filters) {
			filters.Add(new SampleAttribute("Global"));
		}
	}
}

SampleController.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace MvcApp {
	[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = true)]
	public class SampleAttribute : FilterAttribute, IAuthorizationFilter, IActionFilter, IResultFilter, IExceptionFilter {
		private readonly string _scope;

		public SampleAttribute(string scope) {
			_scope = scope;
		}
	
		private void Log() {
			Trace.WriteLine(string.Format("{0}:{1}", new StackTrace().GetFrame(1).GetMethod().Name, _scope));
		}

		public void OnAuthorization(AuthorizationContext filterContext) {
			Log();
		}

		public void OnActionExecuting(ActionExecutingContext filterContext) {
			Log();
		}

		public void OnActionExecuted(ActionExecutedContext filterContext) {
			Log();
		}

		public void OnResultExecuting(ResultExecutingContext filterContext) {
			Log();
		}

		public void OnResultExecuted(ResultExecutedContext filterContext) {
			Log();
		}

		public void OnException(ExceptionContext filterContext) {
			Log();
		}
	}
}

namespace MvcApp.Controllers {
	[Sample("Controller")]
	public class SampleController : Controller {
		private void Log() {
			Trace.WriteLine(string.Format("{0}:First", new StackTrace().GetFrame(1).GetMethod().Name));
		}

		protected override void OnAuthorization(AuthorizationContext filterContext) {
			Log();
		}

		protected override void OnActionExecuting(ActionExecutingContext filterContext) {
			Log();
		}

		protected override void OnActionExecuted(ActionExecutedContext filterContext) {
			Log();
		}

		protected override void OnResultExecuting(ResultExecutingContext filterContext) {
			Log();
		}

		protected override void OnResultExecuted(ResultExecutedContext filterContext) {
			Log();
		}

		protected override void OnException(ExceptionContext filterContext) {
			Log();
		}

		[Sample("Action")]
		public ActionResult Index() {
			return new EmptyResult();
		}
		/*
		/sample/index

		Order が同じ場合は、FilterScope の順で実行される

		OnAuthorization:First
		OnAuthorization:Global
		OnAuthorization:Controller
		OnAuthorization:Action
		OnActionExecuting:First
		OnActionExecuting:Global
		OnActionExecuting:Controller
		OnActionExecuting:Action
		OnActionExecuted:Action
		OnActionExecuted:Controller
		OnActionExecuted:Global
		OnActionExecuted:First
		OnResultExecuting:First
		OnResultExecuting:Global
		OnResultExecuting:Controller
		OnResultExecuting:Action
		OnResultExecuted:Action
		OnResultExecuted:Controller
		OnResultExecuted:Global
		OnResultExecuted:First
		*/

		[Sample("Action")]
		public ActionResult Error() {
			throw new Exception("Test");
		}
		/*
		/sample/error

		OnAuthorization:First
		OnAuthorization:Global
		OnAuthorization:Controller
		OnAuthorization:Action
		OnActionExecuting:First
		OnActionExecuting:Global
		OnActionExecuting:Controller
		OnActionExecuting:Action
		型 'System.Exception' の初回例外が MvcApp.dll で発生しました
		OnActionExecuted:Action
		OnActionExecuted:Controller
		OnActionExecuted:Global
		OnActionExecuted:First
		OnException:Action
		OnException:Controller
		OnException:Global
		OnException:First
		*/
	}
}

ASP.NET MVC でのフィルタリング