C# 时间间隔任务服务

我怎样才能将每天改为12小时或其他时间，而不是几天。 在此代码中：

using (TaskService ts = new TaskService())
        {
            // Create a new task definition and assign properties
            TaskDefinition td = ts.NewTask();
            td.RegistrationInfo.Description = "Does something";

            // Create a trigger that will fire the task at this time every other day
            td.Triggers.Add(new DailyTrigger { DaysInterval = 1 });

            // 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);

            // Remove the task we just created
            ts.RootFolder.DeleteTask("Test");
        }

---

您是否检查了TaskScheduler Codeplex站点

对触发器有详细的解释