记录asp.net网站停止运行原因的代码

记录网站是什么原因导致停止运行还是有必要的，下面是具体的实现方式。

        protected void Application_End(object sender, EventArgs e)
        {
            RecordEndReason();
        }

        /// <summary>
        /// 记录网站停止运行原因
        /// </summary>
        protected void RecordEndReason()
        {
            HttpRuntime runtime = (HttpRuntime)typeof(System.Web.HttpRuntime).InvokeMember("_theRuntime", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.GetField,
                null,
                null,
                null);
            if (runtime == null)
                return;
            string shutDownMessage = (string)runtime.GetType().InvokeMember("_shutDownMessage",
                System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.GetField,
                null,
                runtime,
                null);
            string shutDownStack = (string)runtime.GetType().InvokeMember(
                "_shutDownStack",
                System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.GetField,
                null,
                runtime,
                null);
            string reasonString="网站Application_End，停止运行,shutDownMessage=" + shutDownMessage + ",shutDownStack=" + shutDownStack;
            LogHelper.WriteErrorLog(reasonString,null);
            LogHelper.WriteSmtp(reasonString, null);
            //以下方法将重启的原因和重启时的堆栈信息记录到了windows的事件查看器中,当然你也可以记录到文本文件中。
            //EventLog log = new EventLog();
            //log.Source = "ASP.NET 2.0.50727.0";
            //log.WriteEntry(String.Format("\r\n\r\n_shutDownMessage={0}\r\n\r\n_shutDownStack={1}", shutDownMessage, shutDownStack), EventLogEntryType.Information);
        }

效果截图