net应用程序池自动关闭的解决方法
 while (true)
            {
                using (ServerManager sm = ServerManager.OpenRemote("localhost"))
                {
string poolname ="8080";//应用池名称
                    ApplicationPool appPool = sm.ApplicationPools.FirstOrDefault(x => x.Name == poolname);
                    if (appPool != null)
                    {
                        //当前应用程序是关闭状态,立刻开启
                        if (appPool.State == ObjectState.Stopped)
                        {
                            appPool.Start();
                        }
                        else if (appPool.State == ObjectState.Unknown)
                        {
                            appPool.Recycle();
                        }
Console.Write("正在监视IIS状态,请勿关闭" + System.DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")+" \r\n");
//10分钟检查一次
                        System.Threading.Thread.Sleep(10000);
                    }
                }
            }