推荐一个简单、轻量、功能非常强大的C#/ASP.NET定时任务执行管理器组件–FluentScheduler

Install-Package FluentScheduler

using FluentScheduler;

public class MyRegistry : Registry
{
    public MyRegistry()
    {
        // Schedule an ITask to run at an interval
        Schedule<MyTask>().ToRunNow().AndEvery(2).Seconds();

        // Schedule an ITask to run once, delayed by a specific time interval. 
        Schedule<MyTask>().ToRunOnceIn(5).Seconds();

        // Schedule a simple task to run at a specific time
        Schedule(() => Console.WriteLine("Timed Task - Will run every day at 9:15pm: " + DateTime.Now)).ToRunEvery(1).Days().At(21, 15);

        // Schedule a more complex action to run immediately and on an monthly interval
        Schedule(() =>
        {
            Console.WriteLine("Complex Action Task Starts: " + DateTime.Now);
            Thread.Sleep(1000);
            Console.WriteLine("Complex Action Task Ends: " + DateTime.Now);
        }).ToRunNow().AndEvery(1).Months().OnTheFirst(DayOfWeek.Monday).At(3, 0);

        //Schedule multiple tasks to be run in a single schedule
        Schedule<MyTask>().AndThen<MyOtherTask>().ToRunNow().AndEvery(5).Minutes();
    }
}

protected void Application_Start()
{
    TaskManager.Initialize(new MyRegistry()); 
}