C# MP3播放帮助类

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 /// <summary>
    /// *************************************************
    /// 类名：MP3帮助类
    /// 修改日期：2016/06/25
    /// 作者：董兆生
    /// 联系方式：QQ490412323
    /// *************************************************
    /// </summary>
    public class AudioPlay :IDisposable
    {
        /// <summary>
        /// 播放状态
        /// </summary>
        private PlayState _palystate = PlayState.Closed;
        public  PlayState PlayState
        {
            set
            {
                if (value == _palystate) return;
                OnPropertyChanged(value);
                _palystate = value;
            }
            get { return _palystate; }
        }
        /// <summary>
        /// 操作错误事件
        /// </summary>
        public event Errordelegate EventAudioplayerror;
        /// <summary>
        /// 播放完毕事件
        /// </summary>
        public event PlayEnd EventAudioPlayEnd;
        /// <summary>
        /// 播放状态发生变化事件
        /// </summary>
        public event DelegatePlayStateChange PlayStatePropertyChanged;
        /// <summary>
        /// 播放时间变化事件
        /// </summary>
        public event DelegatePlayNowTime EventPlayTimeChange;
        /// <summary>
        /// 时间长度毫秒
        /// </summary>
        public readonly StringBuilder PlayLenght = new StringBuilder(255);      
        /// <summary>
        /// 播放音量
        /// </summary>
        private  int _playvlome = 1000;
        public int PlayVolume{get { return _playvlome; }}
        /// <summary>
        /// 当前播放时间
        /// </summary>      
        public int NowPlayTime
        {
            get { return int.Parse(_nowplaytime.ToString()); }
        }
        private readonly StringBuilder _nowplaytime = new StringBuilder(255);

        private  AudioModel _nowPlayData;
        /// <summary>
        /// 当前播放歌曲
        /// </summary>
        public AudioModel NowPlayData { get { return _nowPlayData; } }
        /// <summary>
        /// 播放列表
        /// </summary>
        public List<AudioModel> PlayList = new List<AudioModel>();

        private int _playindex;
        /// <summary>
        /// 当前播放歌曲在列表中的序号
        /// </summary>
        public int PlayIndex {  get { return _playindex; } }
        /// <summary>
        /// 是否单曲循环播放
        /// </summary>
        public bool IsSingleLoop { set; get; }
        /// <summary>
        /// 是否列表循环播放
        /// </summary>
        public bool IsListLoop { set; get; }
        /// <summary>
        /// 随机循环播放
        /// </summary>
        public bool IsRandLoop { set; get; }

        private Random _random;

        public AudioPlay(AudioModel playdata)
        {
            _nowPlayData = (AudioModel)playdata.Clone();
            PlayList .Add(_nowPlayData);       
            _playindex = 0;
   

            var playTimer = new Timer
            {
                Enabled = true,
                Interval = 1000
            };

            playTimer.Tick += playTimer_Tick;
        }

        public AudioPlay(List<AudioModel> playList)
        {
            PlayList = new List<AudioModel>(playList);
            _nowPlayData = PlayList[0];          
            _playindex = 0;


            var playTimer = new Timer
            {
                Enabled = true,
                Interval = 1000
            };
            playTimer.Tick += playTimer_Tick;
        }

        public bool NextPlay()
        {
            if (PlayList==null) return false;

            if (_playindex + 1 >= PlayList.Count) return false;

            Closed();

            _nowPlayData = PlayList[_playindex + 1];

            Open();

            SetVolume(PlayVolume);

            Play();

            _playindex = _playindex + 1;

            return true;
        }

        public bool PreviousPlay()
        {
            if (PlayList==null) return false;

            if (_playindex - 1 <0 ) return false;

            Closed();

            _nowPlayData = PlayList[_playindex - 1];

            Open();

            SetVolume(PlayVolume);

            Play();

            _playindex = _playindex - 1;

            return true;
        }

        public bool JumpPlay(int index)
        {
            if (PlayList == null) return false;

            if (index < 0 && index > PlayList.Count - 1) return false;

             Closed();

            _nowPlayData = PlayList[index];

            Open();

            SetVolume(PlayVolume);

            Play();

            _playindex = index;

            return true;
        }

        private void playTimer_Tick(object sender, EventArgs e)
        {
            if (PlayState != PlayState.Playing) return;

            DoOrder(string.Format("status {0} position", _nowPlayData.AliasMovie), _nowplaytime, _nowplaytime.Capacity);

            var returntimeThread = new Thread(ThreadReturnTime) {IsBackground = true};

            returntimeThread.Start(_nowplaytime);

            if (!_nowplaytime.Equals(PlayLenght)) return;

             Closed();

            _palystate = PlayState.Closed;

            if (EventAudioPlayEnd !=null) EventAudioPlayEnd();

            if (IsRandLoop)
            {

                _random = new Random((int)DateTime.Now.Ticks);

                _playindex = _random.Next(0, PlayList.Count);

                _nowPlayData = PlayList[_playindex];

                JumpPlay(_playindex);

                return;
            }

            if (IsListLoop)
            {

                if (_playindex + 1 >= PlayList.Count)
                {
                    _playindex = 0;
                }
                else
                {
                    _playindex = _playindex + 1;
                }

                _nowPlayData = PlayList[_playindex];

                JumpPlay(_playindex);

                return;
            }

            if (!IsSingleLoop) return;

            JumpPlay(_playindex);
        }

        private void ThreadReturnTime(object time)
        {
            if(_palystate!=PlayState.Playing) return;

            if (EventPlayTimeChange != null) EventPlayTimeChange(int.Parse(time.ToString()));
        }

   
        /// <summary>
        /// 执行指令
        /// </summary>
        /// <param name="order">指令</param>
        /// <param name="returnString">需要返回的数据</param>
        /// <param name="returnsize">返回数据大小</param>
        /// <returns></returns>
        private bool DoOrder(string order, StringBuilder returnString,int returnsize)
        {
            var error = WinApiHepler.mciSendString(order, returnString, returnsize, new IntPtr());

            if(IsDisplsed)return false;

            if (error == 0) return true;

            Errorlog(error);

            return false;
        }

        /// <summary>
        /// 事件格式化
        /// </summary>
        /// <param name="millisecond">毫秒</param>
        /// <returns>hh:mm:ss</returns>
        public static string TimeFormat(int millisecond)
        {
            var time = new TimeSpan(0, 0, 0, 0, millisecond);

            return string.Format("{0}:{1}:{2}", time.Hours, time.Minutes, time.Seconds);
        }
        /// <summary>
        /// 获得当前状态
        /// </summary>
        /// <returns></returns>
        public PlayState GetPlyaState()
        {
            var state = new StringBuilder(50);

            return DoOrder(string.Format("status {0} mode", _nowPlayData.AliasMovie), state, state.Capacity) != true ? PlayState.Error : (PlayState)Enum.Parse(typeof(PlayState), state.ToString());
        }
        /// <summary>
        /// 打开音乐文件
        /// </summary>
        public void Open()
        {
            PlayState = DoOrder(string.Format("open {0} alias {1}", _nowPlayData.ShortPath, _nowPlayData.AliasMovie), null, 0) != true ? PlayState.Error : PlayState.Opne;

            if (_palystate != PlayState.Opne) return;

            DoOrder(string.Format("status {0} length", _nowPlayData.AliasMovie), PlayLenght, PlayLenght.Capacity);

        }
        /// <summary>
        /// 播放音乐
        /// </summary>
        /// <param name="starttime">开始时间</param>
        /// <param name="endtime">结束时间</param>
        public void Play(int starttime,int endtime)
        {
            PlayState = DoOrder(string.Format("play {0} from {1} to {2} notify", _nowPlayData.AliasMovie, starttime, endtime), null, 0) != true ? PlayState.Error : PlayState.Playing;         
        }
        /// <summary>
        /// 播放音乐
        /// </summary>
        public void Play()
        {
            PlayState = DoOrder(string.Format("play {0} notify", _nowPlayData.AliasMovie), null, 0) != true ? PlayState.Error : PlayState.Playing;
        }
        /// <summary>
        /// 暂停
        /// </summary>
        public void Pause()
        {
            PlayState = DoOrder(string.Format("pause {0}", _nowPlayData.AliasMovie), null, 0) != true ? PlayState.Error : PlayState.Paused;
        }
        /// <summary>
        /// 停止
        /// </summary>
        public void Stop()
        {
            PlayState = DoOrder(string.Format("stop {0}", _nowPlayData.AliasMovie), null, 0) != true ? PlayState.Error : PlayState.Stopped;         
        }
        /// <summary>
        /// 关闭音乐
        /// </summary>
        public void Closed()
        {
            PlayState = DoOrder(string.Format("close {0}", _nowPlayData.AliasMovie), null, 0) != true ? PlayState.Error : PlayState.Closed;      
        }
        /// <summary>
        /// 设置音量
        /// </summary>
        /// <param name="volume">0-1000</param>
        /// <returns></returns>
        public  bool SetVolume(int volume)
        {
            if (!DoOrder(string.Format("setaudio {0} volume to {1}", _nowPlayData.AliasMovie, volume), null, 0))
                return false;
            _playvlome = volume;
            return true;
        }

        private void Errorlog(int error)
        {
            var errorText = new StringBuilder(50);

            WinApiHepler.mciGetErrorString(error, errorText, errorText.Capacity);

            if (EventAudioplayerror == null) return;

            EventAudioplayerror(errorText.ToString());
        }

        private void OnPropertyChanged(PlayState state)
        {
            if (PlayStatePropertyChanged != null)
            {
                PlayStatePropertyChanged(state);
            }
        }

       protected bool IsDisplsed { get; set; }

       ~AudioPlay()
        {
            Dispose();
        }
 
        /// <summary>
        /// 释放
        /// </summary>
        public void Dispose()
        {
            Dispose(IsDisplsed);
        }
        public virtual void Dispose(bool isDisplsed)
        {
            if (isDisplsed)
                return;
               
            EventAudioplayerror = null;

            EventAudioPlayEnd = null;

            EventPlayTimeChange = null;

            DoOrder(string.Format("close {0}", _nowPlayData.AliasMovie), null, 0);        
        }
     
    }
    public delegate void Errordelegate(string error);

    public delegate void PlayEnd();

    public delegate void DelegateHockMesg(Message msg);

    public delegate void DelegatePlayStateChange(PlayState state);

    public delegate void DelegatePlayNowTime(int time);

    public class WindosMessageInform :UserControl
    {
        int[] HockMsg { set; get; }

        public event DelegateHockMesg EventHockmesg;

        public WindosMessageInform(int[] hockmsg)
        {
            HockMsg = hockmsg;
        }

        protected override void WndProc(ref Message m)
        {
            if (HockMsg.ToList().Contains(m.Msg))
            {
                if (EventHockmesg != null) EventHockmesg(m);
            }
            base.WndProc(ref m);
        }
    }

    public class AudioModel : ICloneable
    {
        public AudioModel()
        {
          
        }

        public AudioModel(string file,string alias,object data)
        {
            PlayFile = file;

            AliasMovie = alias;

            SourceData = data;

            FileName = System.IO.Path.GetFileNameWithoutExtension(file);

            var shortpath = new StringBuilder(255);

            WinApiHepler.GetShortPathName(PlayFile, shortpath, shortpath.Capacity);

            ShortPath = shortpath.ToString();
        }  
        public string FileName { set; get; }
       
        public string PlayFile { set; get; }

        public string ShortPath { set; get; }

        public string AliasMovie { set; get; }

        public object SourceData { set; get; }

        public object Clone()
        {
            var clonedata = SerializationHelper.GetSerialization(this);

            return SerializationHelper.ScriptDeserialize<AudioModel>(clonedata);
        }
    }

    public enum PlayState
    {
        Opne,
        Playing,
        Paused,
        Stopped,
        Closed,
        None,
        Error
    }

基于winAPI winmm.dll  

mciSendString 编写的帮助类功能比较齐全（起码比我现在网上搜的齐全@-@）

已经实现的功能 播放 暂停 停止 关闭就不多说了基本功能没啥好说的。

事件：播放完毕通知，时间变化通知，状态变化通知，错误通知

功能：上一首， 下一首 ，指定顺序播放

播放后状态：单曲循环，列表循环，随机播放

里面用到的BearChildren为我个人编写的工具功能如名字一样熊孩子...意思：让这个框架跟熊孩子一样什么都能做 目前还在完善中 

目前框架主要是以单机桌面开发编写的一套工具，内容为图像处理，Io，数据等，我希望能有更多的人来帮助我来完善这个框架在日常工作中让开发变的更加方便快捷，

QQ群为：点击链接加入群【NaughtyKid学习交流群】：https://jq.qq.com/?_wv=1027&k=5hdQ2Ag 欢迎大家一起加入讨论丰富自己的技术 无论你是大神还是新手都欢迎你们。

代码下载链接：自带播放器demo

https://git.coding.net/BearChildren/AudioPlayHelper.git