Microsoft.AspNet.SignalR.SqlServer.ObservableDbOperation.Stop C# (CSharp) Method

        protected virtual void Stop(Exception ex)
        {
            if (ex != null)
            {
                Faulted(ex);
            }

            if (_notificationState != NotificationState.Disabled)
            {
                try
                {
                    Trace.TraceVerbose("{0}Stopping SQL notification listener", TracePrefix);
                    SqlDependency.Stop(ConnectionString);
                    Trace.TraceVerbose("{0}SQL notification listener stopped", TracePrefix);
                }
                catch (Exception stopEx)
                {
                    Trace.TraceError("{0}Error occurred while stopping SQL notification listener: {1}", TracePrefix, stopEx);
                }
            }

            lock (_stopLocker)
            {
                if (_disposing)
                {
                    _stopHandle.Set();
                }
            }
        }