利用IHttpHandler计算页面的执行时间

来自Cuyahoga 使用自定义的PageHandler处理所有的aspx页面 获取页面的执行时间

using  System;
using  System.Web;
using  System.Web.UI;
using  System.Web.SessionState;

namespace  Cuyahoga.Web.HttpHandlers
... {
    /**//// <summary>
    /// This class handles all aspx page requests for Cuyahoga.
    /// </summary>
    public class PageHandler : IHttpHandler, IRequiresSessionState
    ...{
        IHttpHandler Members#region IHttpHandler Members
        /**//// <summary>
        /// Process the aspx request. This means (eventually) rewriting the url and registering the page 
        /// in the container.
        /// </summary>
        /// <param name="context"></param>
        public void ProcessRequest(HttpContext context)
        ...{
            string rawUrl = context.Request.RawUrl;
            DateTime startTime = DateTime.Now;
            // Obtain the handler for the current page
            string aspxPagePath = rawUrl.Substring(0, rawUrl.IndexOf(".aspx") + 5);
            IHttpHandler handler = PageParser.GetCompiledPageInstance(aspxPagePath, null, context);

            // Process the page just like any other aspx page
            handler.ProcessRequest(context);
            TimeSpan duration = DateTime.Now - startTime;
            context.Response.Write(String.Format("Request finshed. Total duration: {0} ms.", 
                duration.Milliseconds));
        }

        /**//// <summary>
        /// 
        /// </summary>
        public bool IsReusable
        ...{
            get ...{ return true; }
        }
        #endregion
    }
}

 webconfig中注册HttpHandler

< httpHandlers >
     < add verb = " * "  path = " *.aspx "  
         type = " Cuyahoga.Web.HttpHandlers.PageHandler,Cuyahoga.Web "   />
</ httpHandlers >