quartz.net定时任务

安装quartz包版本2.6.1

public class TimingJob : IJob
        {
            public void Execute(IJobExecutionContext context)
            {
                //将要定时执行的逻辑代码写于此处
                systemState = false;
            }
        }

ISchedulerFactory sf = new StdSchedulerFactory();
            IScheduler scheduler = sf.GetScheduler();

            IJobDetail job = JobBuilder.Create<TimingJob>().WithIdentity("job1", "mygroup").Build();

            ITrigger trigger = TriggerBuilder.Create().StartAt(DateTime.Now.AddSeconds(5)).WithCronSchedule("0 0 1/3 * * ? ").Build();

            scheduler.ScheduleJob(job, trigger);
            scheduler.Start();

            QuartzState = true;

时间（Cron）表达式：https://www.cnblogs.com/-sylar/p/8367625.html
在线Cron表达式生成器：http://cron.qqe2.com/