Action Filter

代碼

using System.Web;

using System.Web.Mvc;

using System.IO;

namespace MvcApp1.ActionFilters

{

    public class SimpleActionFilterAttribute : ActionFilterAttribute

    {

        public override void OnActionExecuting(ActionExecutingContext filterContext)

        {

            File.AppendAllText(@"f:\ActinoFilter.log", ID + " : OnActionExecuting" + Environment.NewLine );

        }

        public override void OnActionExecuted(ActionExecutedContext filterContext)

            File.AppendAllText(@"f:\ActinoFilter.log", ID + " : OnActionExecuted" + Environment.NewLine);

        public override void OnResultExecuting(ResultExecutingContext filterContext)

            File.AppendAllText(@"f:\ActinoFilter.log", ID + " : OnResultExecuting" + Environment.NewLine);

        public override void OnResultExecuted(ResultExecutedContext filterContext)

            File.AppendAllText(@"f:\ActinoFilter.log", ID + " : OnResultExecuted" + Environment.NewLine);

        public int ID { get; set; }

    }

////////////////////////////////

    public class AuthenticationActionFilterAttribute:ActionFilterAttribute

            if (!filterContext.HttpContext.User.Identity.IsAuthenticated)

            {

                filterContext.Result = new RedirectToRouteResult("Default", new System.Web.Routing.RouteValueDictionary(new { action="SignIn"}));

            }

}

////////////////////////////////////////////////////

using System.IO.Compression;

    public class CompressActionFilterAttribute:ActionFilterAttribute

            string acceptEncoding = filterContext.HttpContext.Request.Headers["Accept-Encoding"].ToLower();

            if (string.IsNullOrEmpty(acceptEncoding)) return;

            var response = filterContext.HttpContext.Response;

            if (acceptEncoding.Contains("gzip"))        //, deflate

                response.AddHeader("Content-Encoding", "gzip");

                response.Filter = new GZipStream(response.Filter, CompressionMode.Compress);

            else  if (acceptEncoding.Contains("deflate"))        //, deflate

                response.AddHeader("Content-Encoding", "deflate");

                response.Filter = new DeflateStream(response.Filter, CompressionMode.Compress);