Question

i have a problem with using cron trigger in Quartz.net. My code:

        var trigger = new CronTrigger("0/30 * * * * ?");

        trigger.Name = "some name";
        trigger.Group = "group";

        scheduler.ScheduleJob(jobDetails, trigger);

it should run every 30 seconds, but on last line following exception occures:
“Based on configured schedule, the given trigger will never fire.”
can anyone help?

Answer 1

The first parameters to create a CronTrigger is never a cron expression but the trigger name.
Instead you can use this overload:

var trigger = new CronTrigger(triggerName, groupName, "0/30 * * * * ?");

UPDATE:

You can configure a logger which is used by Quartz.net to trap some internal error.
I used NLog and it has helped me a lot to debug common mistakes.