在托管服务器C＃中定期安排任务

Question

I have a requirement communicating with ftp server after a certain time interval and host it in a cloud. To run a schedule task in a hosted server what should I do? It would be great if someone could point me to a useful online resource.

Thanks in Advance..

Answer 1

Most of cloud environments have some kind of scheduler. For example Azure . Also list of pretty good scheduling libraries could be found in Scott Hanselmans article here .

Answer 2

I used Quartz and it is awesome and straight-forwarded.

A simple example of usage is something like :

    using Quartz;

    private ScheduleCopyTask()
    {
        Quartz.IScheduler sched;
        IJobDetail job;
        ITrigger trigger;

        // Instantiate the Quartz.NET scheduler
        var schedulerFactory = new Quartz.Impl.StdSchedulerFactory();
        sched = schedulerFactory.GetScheduler();
        sched.Start();

        // Instantiate the JobDetail object passing in the type of your
        // custom job class. Your class merely needs to implement a simple
        // interface with a single method called "Execute".
        job = JobBuilder.Create<SyncJob>()
                     .WithIdentity("SyncJob", "group1").Build();


        // Trigger the job to run now, and then every 30 mins
        trigger = TriggerBuilder.Create()
         .WithIdentity("SyncTrigger", "group1")
         .StartNow()
         .WithSimpleSchedule(x => x
         .WithIntervalInMinutes(30)
         .RepeatForever()).Build();

        sched.ScheduleJob(job, trigger);
    }

And your job class :

    class SyncJob : IJob
    {      
        public void Execute(IJobExecutionContext context)
        {
           // your task goes here
        }
    }

You can find Quartz documentation here : http://quartz-scheduler.org/generated/2.2.1/html/qs-all/

Answer 3

I use http://hangfire.io/ for this, it is powerful and yet very simple to use.

You could also use http://www.quartz-scheduler.net/ , but I haven't use it so I can't comment on it.