C#WinForm中播放背景音乐（亲测可用）

using System.Runtime.InteropServices;

        public static uint SND_ASYNC = 0x0001;

        public static uint SND_FILENAME = 0x00020000;

        [DllImport("winmm.dll")]

        public static extern uint mciSendString(string lpstrCommand,

        string lpstrReturnString, uint uReturnLength, uint hWndCallback);

        //播放背景音乐

        public void Play()

        {

            mciSendString(@"close temp_alias", null, 0, 0);

            mciSendString(@"open ""G:/Club_Card/此情可待.mp3"" alias temp_alias", null, 0, 0);

            mciSendString("play temp_alias repeat", null, 0, 0);

        }

        //关闭背景音乐

        mciSendString(@"close temp_alias", null, 0, 0);

        mciSendString(@"close ""G:/Club_Card/此情可待.mp3"" alias temp_alias", null, 0, 0);

        mciSendString("pause temp_alias repeat", null, 0, 0);