使用任务计划程序创建重复任务

Question

I am using Task Scheduler library from here: taskscheduler.codeplex.com

As per their examples, I am trying to create task with following behaviour: Task should run at every 1 hour for all 12 months including all days of the month.

Following code is doing this except task does not get repeated every 1 hour. It run once and then it runs on next day.

                TaskDefinition td = ts.NewTask();
                td.RegistrationInfo.Description = "sample task";

                // Create a trigger that will execute very 1 hour. 
                var trigger = new MonthlyTrigger();
                trigger.StartBoundary = DateTime.Now + TimeSpan.FromSeconds(60);
                trigger.Repetition.Interval = TimeSpan.FromHours(1);
                trigger.Repetition.Duration = TimeSpan.FromHours(24);
List<int> days = new List<int>();
                for (int i = 1; i < 32; i++)
                {
                    days.Add(i);
                }
                trigger.DaysOfMonth = days.ToArray();

                td.Triggers.Add(trigger);
                td.Actions.Add(new ExecAction(Assembly.GetEntryAssembly().Location));
                // Register the task in the root folder
                ts.RootFolder.RegisterTaskDefinition(@"RemoteClient Task", td);

I have also tried TimeTrigger but that too does not repeat task. If I see the created task in Scheduled Task window, I see following:

If you see the red highlighted part, the task repetition is off. I need to enable it so my task can execute at every hour a day. Any help would be great in this direction.

Thanks, Jay

Answer 1

I believe following line is culprit.

trigger.Repetition.Duration = TimeSpan.FromHours(24);

You want to remove this line. I wrote following program and it works as expected.

static void Main(string[] args)
    {
        // Get the service on the local machine
        using (TaskService ts = new TaskService())
        {
            // Create a new task definition and assign properties
            TaskDefinition td = ts.NewTask();
            td.RegistrationInfo.Description = "Does something";

            // Add a trigger that, starting now, will fire every day
            // and repeat every 1 minute.
            var dt = new DailyTrigger();
            dt.StartBoundary = DateTime.Now;
            dt.Repetition.Interval = TimeSpan.FromSeconds(60);
            td.Triggers.Add(dt);

            // Create an action that will launch Notepad whenever the trigger fires
            td.Actions.Add(new ExecAction("notepad.exe", "c:\\test.log", null));

            // Register the task in the root folder
            ts.RootFolder.RegisterTaskDefinition("Test", td);
        }
        Console.ReadLine();
    }

This is how above task looks in Task Scheduler UI: