随缘

        #region 报警
        [DllImport("winmm.dll", EntryPoint = "PlaySound")]
        private static extern bool Win32_PlaySound(string pszSound, IntPtr hmod, uint fdwSound);   
 
        /// <summary>
        /// 播放一个wav音频文件
        /// </summary>
        /// <param name="path"></param>
        /// <param name="asynchronous"></param>
        /// <param name="loop"></param>
        /// <param name="doNotStopPlay"></param>
        public static void PlaySound(string path, bool asynchronous, bool loop, bool doNotStopPlay)
        {
            Win32_PlaySound(path, IntPtr.Zero, (uint)((asynchronous ?
          PlaySoundMessage.SND_ASYNC : PlaySoundMessage.SND_SYNC) | (loop ?
          PlaySoundMessage.SND_LOOP : 0) | (doNotStopPlay ?
          PlaySoundMessage.SND_NOSTOP : 0) | PlaySoundMessage.SND_FILENAME));
        }
 
        /// <summary>
        /// 停止播放
        /// </summary> 
        public static void StopSound()
        {
            Win32_PlaySound(null, IntPtr.Zero, 0);
        }
 
        [Flags()]
        internal enum PlaySoundMessage
        {
            SND_SYNC = 0x0000,
            SND_ASYNC = 0x0001,
            SND_LOOP = 0x0008,
            SND_NOSTOP = 0x0010,
            SND_FILENAME = 0x00020000
        }
        #endregion