public class CompressAttribute : ActionFilterAttribute

    {

        public override void OnActionExecuting(ActionExecutingContext filterContext)

        {

            if (filterContext.IsChildAction)

                return;

            HttpRequestBase request = filterContext.HttpContext.Request;

            string acceptEncoding = request.Headers["Accept-Encoding"];

            if (string.IsNullOrEmpty(acceptEncoding)) return;

            acceptEncoding = acceptEncoding.ToUpperInvariant();

            HttpResponseBase response = filterContext.HttpContext.Response;

            if (acceptEncoding.Contains("GZIP"))

            {

                response.AppendHeader("Content-encoding", "gzip");

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

            }

            else if (acceptEncoding.Contains("DEFLATE"))

            {

                response.AppendHeader("Content-encoding", "deflate");

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

            }

        }

        public override void OnResultExecuted(ResultExecutedContext filterContext)

        {

            //if (filterContext.Exception != null)

            //{

            //    filterContext.HttpContext.Response.Filter = null;

            //}

        }

    }

[Compress]

    public class BaseController: Controller

    {