/********************请求处理顺序执行事件**********************/

        /// <summary>

        /// 请求入站

        /// 在此管道中禁止访问Session

        /// </summary>

        protected void Application_BeginRequest()

        {

            Response.Write("----BeginRequest---");

            Response.Write("<br/>");

        }

        /// <summary>

        /// 发送内容到客户端之前

        /// 此管道中禁止访问Session

        /// </summary>

        protected void Application_PreSendRequestContent()

        {

            Response.Write("----PreSendContent---:");

            Response.Write("<br/>");

        }

        /// <summary>

        /// 页面框架执行

        /// 此管道中可以访问Session
/// </summary>

        protected void Application_PostRequestHandlerExecute()

        {

            Response.Write("----PostRequestHandlerExecute---count:" + Session.Count + ",当前SessionID:" + Session.SessionID);

            StringBuilder builder = new StringBuilder();

            Response.Write("<div style='text-indent:2em;'>");

            foreach (string item in Session.Keys)

            {

                string line = string.Format("---{0}:{1}", item, Session[item]);

                builder.AppendLine(line);

            }

            Response.Write(builder.ToString());

            Response.Write("</div>");

            Response.Write("<br/>");

        }

        /// <summary>

        /// 页面框架释放请求状态

        /// 此管道中禁止访问Session

        /// </summary>

        protected void Application_ReleaseRequestState()

        {

            Response.Write("----ReleaseRequestStatet---");

            Response.Write("<br/>");

        }

        /// <summary>

        /// 页面框架响应完成

        ///此管道，禁止使用Session

        /// </summary>

        protected void Application_UpdateRequestCache()

        {

            Response.Write("----UpdateRequestCache---");

            Response.Write("<br/>");

        }

        /// <summary>

        /// 请求出站

        /// 此管道中禁止访问Session

        /// </summary>

        protected void Application_EndRequest()

        {

            Response.Write("----EndRequest---");

            Response.Write("<br/>");

        }