Asp.Net程序目录下文件夹或文件操作导致Session失效的解决方案

<system.web>  <sessionState mode="StateServer" stateConnectionString="tcpip=127.0.0.1:42424" sqlConnectionString="data   source=127.0.0.1;Trusted_Connection=yes" cookieless="false" timeout="40"/></system.web>

void Application_Start(object sender, EventArgs e)  {    // 在应用程序启动时运行的代码    try    {      //启动ASP.NET 状态服务      string g_serviceName = "aspnet_state";      System.ServiceProcess.ServiceController[] serviceControllers =         System.ServiceProcess.ServiceController.GetServices();      foreach (System.ServiceProcess.ServiceController service in serviceControllers)      {        if (service.ServiceName == g_serviceName)        {          if (service != null && service.Status != System.ServiceProcess.ServiceControllerStatus.Running)          {            service.Start();　　　　　　　　　　　　　　 SimpleLogHelper.WriteError(g_serviceName + "服务已开启");          }          else          {            if (service == null)            {              SimpleLogHelper.WriteError(g_serviceName + "服务未安装");            }            else            {              SimpleLogHelper.WriteError(g_serviceName + "服务正在运行...");            }          }          break;        }      }    }    catch (Exception ex)    {      SimpleLogHelper.WriteError(ex.ToString());    }  }