1 using System;

 2

 3 namespace System.Web.Mvc

 4 {

 5     // Summary:

 6     //     Represents the base class for filter attributes.

 7     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = false)]

 8     public abstract class ActionFilterAttribute : FilterAttribute, IActionFilter, IResultFilter

 9     {

10         // Summary:

11         //     Initializes a new instance of the System.Web.Mvc.ActionFilterAttribute class.

12         protected ActionFilterAttribute();

13

14         // Summary:

15         //     Called by the ASP.NET MVC framework after the action method executes.

16         //

17         // Parameters:

18         //   filterContext:

19         //     The filter context.

20         public virtual void OnActionExecuted(ActionExecutedContext filterContext);

21         //

22         // Summary:

23         //     Called by the ASP.NET MVC framework before the action method executes.

24         //

25         // Parameters:

26         //   filterContext:

27         //     The filter context.

28         public virtual void OnActionExecuting(ActionExecutingContext filterContext);

29         //

30         // Summary:

31         //     Called by the ASP.NET MVC framework after the action result executes.

32         //

33         // Parameters:

34         //   filterContext:

35         //     The filter context.

36         public virtual void OnResultExecuted(ResultExecutedContext filterContext);

37         //

38         // Summary:

39         //     Called by the ASP.NET MVC framework before the action result executes.

40         //

41         // Parameters:

42         //   filterContext:

43         //     The filter context.

44         public virtual void OnResultExecuting(ResultExecutingContext filterContext);

45     }

46 }

 1 using System.Web.Mvc;

 2

 3 namespace MVC3.Demo.App_Code

 4 {

 5     public class LogActionFilter : ActionFilterAttribute

 6     {

 7         public string LogMessage { get; set; }

 8

 9         public override void OnActionExecuting(ActionExecutingContext filterContext)

10         {

11             filterContext.HttpContext.Response.Write(@"在Action执行之前执行" + LogMessage + "<br />");

12             base.OnActionExecuting(filterContext);

13         }

14

15         public override void OnActionExecuted(ActionExecutedContext filterContext)

16         {

17             filterContext.HttpContext.Response.Write(@"在Action执行之后执行" + LogMessage + "<br />");

18             base.OnActionExecuted(filterContext);

19         }

20

21         public override void OnResultExecuting(ResultExecutingContext filterContext)

22         {

23             filterContext.HttpContext.Response.Write(@"在Result执行之前执行" + LogMessage + "<br />");

24             base.OnResultExecuting(filterContext);

25         }

26

27         public override void OnResultExecuted(ResultExecutedContext filterContext)

28         {

29             filterContext.HttpContext.Response.Write(@"在Result执行之后执行" + LogMessage + "<br />");

30             base.OnResultExecuted(filterContext);

31         }

32     }

33 }

1         [LogActionFilter(LogMessage = "日志写入：Validation方法")]

2         public ActionResult Validation()

3         {

4             return View();

5         }