C#闹钟程序，根据你设定的时间自动报警，不过你需要最小化本程序，如果要完美的话，可以增加一个托盘处最小化的功能。带倒计时功能，用法简单，可在此基础上完善成一个真正的闹钟程序。-C# alarm clock program, depending on your set alarm time, but you need to minimize this program, if you want perfection, you can add a tray at the minimization fu