我利用MessageBeep实现声音报警，当点击确认键后在停止声音报警，但是怎样停呢？

public enum BeepType
        {
            SimpleBeep = -1,
            IconAsterisk = 0x00000040,
            IconExclamation = 0x00000030,
            IconHand = 0x00000010,
            IconQuestion = 0x00000020,
            Ok = 0x00000000,
        }

        [DllImport("user32.dll")]
        public static extern bool MessageBeep(BeepType beepType);
然后在用的地方调用  MessageBeep(BeepType beepType);