KTV点歌系统

KTV点歌系统————北大青鸟  指导老师：原玉明

 public enum SongPlayState
    {
        //未播放，播放，重播，切歌
        unplayed, played, again, cut
    }
    public class Song
    {
        public string SongName { get; set; }//歌曲名称

        public string SongURL { get; set; }//歌曲路径

       
        public  SongPlayState playState = SongPlayState.unplayed;//默认未播放
        internal SongPlayState PlayState { get; set; }

        //状态为已播
        public  void SetSongPlayed()
        {
            this.PlayState = SongPlayState.played;
        }
        //重唱
        public void SetPlayAgain()
        {
            this.playState = SongPlayState.again;
        }
       //切歌
        public void SetSongCut()
        {
            this.playState = SongPlayState.cut;
        }

PlayList类中实现切歌 重唱 下一首 等.....

public class PlayList
    {
        //定义一个长度为、50的歌曲数组，默认存储50首歌曲
        public static Song[] SongList = new Song[50];
        public static int SongIndex = 0;//当前播放的歌曲在数组中的索引
        //点播一首歌曲，其实是将歌曲对象添加到歌曲数组中
        public static bool AddSong(Song song)
        {
            bool success = false;//记录添加歌曲是否成功
            for (int i = 0; i < SongList.Length; i++)
            {
                //找到数组中第一个为null的位置
                if (SongList[i] == null)
                {
                    SongList[i] = song;
                    success = true;
                    break;
                }
            }
            return success;
        }
        //获取当前播放的歌曲：：既然是获取当前播放的歌曲，返回值肯定是Song类型
        public static Song GetPlaySong()
        {
            if (SongList[SongIndex] != null)
            {
                return SongList[SongIndex];
            }
            else
            {
                return null;
            }
        }
        /// <summary>
        /// 播放下一首
        /// </summary>
        public static void MoveOn()
        {
            if (SongList[SongIndex] != null && SongList[SongIndex].PlayState == SongPlayState.again)
            {
                SongList[SongIndex].SetSongPlayed();
            }
            else
            {
                SongIndex++;
            }
        }
        /// <summary>
        /// 当前播放的歌曲名称
        /// </summary>
        /// <returns>歌曲名称</returns>
        public static string PlayingSongName()
        {
            string songName = ""; // 歌曲名称
            if (SongList[SongIndex] != null)
            {
                songName = SongList[SongIndex].SongName;
            }

            return songName;
        }
        /// <summary>
        /// 下一首要播放的歌曲名称
        /// </summary>
        /// <returns>歌曲名称</returns>
        public static string NextSongName()
        {
            string songName = ""; // 歌曲名称
            if (SongList[SongIndex + 1] != null)
            {
                songName = SongList[SongIndex + 1].SongName;
            }

            return songName;
        }
        //重放当前歌曲
        public static void PlayAgain()
        {
            if (SongList[SongIndex] != null)
            {
                SongList[SongIndex].SetPlayAgain();
            }
        }
        //切歌
        public static void CutSong(int index)
        {
            int i;//循环变量，代表切歌的位置
            if (index == -1)//循环变量，代表切割的位置
            {
                i = SongIndex;
            }
            else
            {
                i = index;//从切歌的位置开始，将歌曲逐个向前移一个位置
            }
            SongList[i].SetSongCut();
            while (SongList[i] != null)
            {
                SongList[i] = SongList[i + 1];
                i++; 
                //如果达到数组最后一个元素，就将最后一个元素指向空
                if (i == SongList.Length)
                {
                    SongList[i] = null;
                }
            }
        }
    }

 实现歌手点歌

 public FrmMain frmMain;
        string connectionStr = "server=.;database=MyKTV;uid=sa";
        DBHelp db = new DBHelp();
        private SqlConnection con;
        //首先要查出数据库中的图片路径和歌曲路径
        private void FrmCountry_Load(object sender, EventArgs e)
        {
            
            con = new SqlConnection(connectionStr);
            con.Open();
            string sql = "select resource_path from resource_path where resource_id=1";

            string sqlsongpath = "select resource_path from resource_path where resource_id=2";
            SqlCommand cmd = new SqlCommand(sql,con);

            SqlCommand cmd2 = new SqlCommand(sqlsongpath, con);
            KtvUnit.ImagePath = cmd.ExecuteScalar().ToString();
            KtvUnit.SongPath = cmd2.ExecuteScalar().ToString();
            con.Close();
        }
        //点击歌手男女或组合时
        private void LvOne_Click(object sender, EventArgs e)
        {
           
            LoadSingerArea();
        }
        public string singer_type { get; set; }
        private void LoadSingerArea()
        {
            if (this.LvOne.SelectedItems[0] != null)
            {
                LvOne.Visible = false;
                LvTwo.Location = LvOne.Location;
                LvTwo.Dock = DockStyle.Fill;
                LvTwo.Visible = true;
                this.singer_type=Convert.ToString(LvOne.SelectedItems[0].Text);
            }
           
            con = new SqlConnection(connectionStr);
            string sql = "select singertype_id,singertype_name from singer_type";
            SqlCommand cmd = new SqlCommand(sql, con);
            SqlDataReader dr;
            try
            {
                con.Open();
                LvTwo.Items.Clear();
                dr = cmd.ExecuteReader();             
                if (dr.HasRows)
                {
                    int index = 0;
                    while (dr.Read())
                    {
                        ListViewItem lvItem = new ListViewItem();
                        int typeid = Convert.ToInt32(dr["singertype_id"]);
                         string typename = Convert.ToString(dr["singertype_name"]);
                        lvItem.Text = typename;
                        lvItem.Tag = typeid;
                        lvItem.ImageIndex = index;
                        LvTwo.Items.Add(lvItem);
                        index++;
                    }
                }
                dr.Close();
            }
            catch (Exception ex)
            {

                MessageBox.Show("系统出现异常" + ex.Message);
            }
            finally 
            {
                con.Close();
            }
        }
        public string singertype_id { get; set; }
        /// <summary>
        /// 点击地区类型时
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void LvTwo_Click(object sender, EventArgs e)
        {
            if (this.LvTwo.SelectedItems[0] != null)
            {
                LvTwo.Visible = false;
                Lvthree.Location = LvTwo.Location;
                Lvthree.Dock = DockStyle.Fill;
                Lvthree.Visible = true;
                this.singertype_id = Convert.ToString(LvTwo.SelectedItems[0].Tag);
            }
            string result = singer_type;
            if (result != "组合")
            {
                result = singer_type == "女歌手" ? "女" : "男";
            }
            con = new SqlConnection(connectionStr);
            string sql =string.Format( "select singer_id,singer_name,singer_photo_url from singer_info where singertype_id={0} and singer_Sex='{1}'",singertype_id,result);
            SqlCommand cmd = new SqlCommand(sql, con);
            SqlDataReader dr;
            try
            {
                con.Open();
                int index = 0;
                Lvthree.Items.Clear();
                imageList3.Images.Clear();
                dr = cmd.ExecuteReader();
                if (dr.HasRows)
                {  
                    while (dr.Read())
                    {                       
                        string photoURL =KtvUnit.ImagePath + Convert.ToString(dr["singer_photo_url"]);
                        //先给ImageList填充图片
                        imageList3.Images.Add(Image.FromFile(photoURL));
                        ListViewItem lvItem = new ListViewItem();
                        lvItem.Text = Convert.ToString(dr["singer_name"]);
                        lvItem.Tag =  Convert.ToString(dr["singer_id"]);
                        lvItem.ImageIndex = index;
                        Lvthree.Items.Add(lvItem);
                        index++;
                    }
                }
                dr.Close();
            }
            catch (Exception ex)
            {

                MessageBox.Show("系统出现异常" + ex.Message);
            }
            finally
            {
                con.Close();
            }
        }

        public void SongList()
        {
            //读取数据库，读出该歌手的所有歌曲
 
            StringBuilder sb = new StringBuilder();
            //拼接SQL语句
            sb.AppendFormat("select song_id,song_name,song_url,singer_name from song_info,singer_info where singer_name='{0}' and song_info.singer_id={1}", Lvthree.SelectedItems[0].Text, Convert.ToInt32(Lvthree.SelectedItems[0].Tag));
            FrmSongList songList = new FrmSongList();
           
            songList.Sql = sb.ToString();
            songList.Previous = KtvClient.PrevioisForm.Singer;//指定返回的窗体是按歌手点歌
            songList.ShowDialog();
            this.Close();

        }

        private void Lvthree_Click(object sender, EventArgs e)
        {
            SongList();
        }

        private void tsSingerMain_Click(object sender, EventArgs e)
        {
            FrmMain main = new FrmMain();
            main.Show();
            this.Hide();
        }

        private void tsSingerBack_Click(object sender, EventArgs e)
        {
            if (this.LvOne.Visible==true)
            {
                FrmMain man = new FrmMain();
                man.Show();
                this.Hide();
            }
            else if (this.LvTwo.Visible==true)
            {
                this.LvTwo.Visible = false;
                this.LvOne.Visible = true;
            }
            else if (this.Lvthree.Visible==true)
            {
                this.Lvthree.Visible = false;
                this.LvTwo.Visible = true;
            }
        }

        private void tsSingerCut_Click(object sender, EventArgs e)
        {
            PlayList.CutSong(-1);
        }

        private void tsSingerAgain_Click(object sender, EventArgs e)
        {
            PlayList.PlayAgain();
        }

        private void tsSingerYidian_Click(object sender, EventArgs e)
        {
            FrmPlayList frm = new FrmPlayList();
            frm.Show();
        }

拼音点歌

public FrmMain frmMain;
        [DllImportAttribute("user32.dll")]
        private static extern bool AnimateWindow(IntPtr hwnd, int dwTime, int dwFlags);
        DBHelp db = new DBHelp();
        string connectionStr = "server=.;database=MyKTV;uid=sa";
        private void FrmPinYin_Load(object sender, EventArgs e)
        {
            AnimateWindow(this.Handle, 300, FrmMain.AW_SLIDE + FrmMain.AW_VER_POSITIVE);
            SqlConnection con = new SqlConnection(connectionStr);
            con.Open();
            db.connection();   
            string sqlsongpath = "select resource_path from resource_path where resource_id=2";
            SqlCommand cmd = new SqlCommand(sqlsongpath, con);
            KtvUnit.SongPath = cmd.ExecuteScalar().ToString();
        }
        private void btnSearch_Click(object sender, EventArgs e)
        {
            string PinYin = this.txtPinYin.Text;
            //判断是否是中文 还是拼音
            if (!Regex.IsMatch(this.txtPinYin.Text, @"^[u4e00-u9fa5]+$"))
            {
                StringBuilder PY = new StringBuilder(PinYin);
               
                for (int i = 0; i <= PY.Length; i++)
                {
                    PY.Insert(i, "%");
                    i++;
                }
                string sql = string.Format("SELECT song_name,singer_name FROM    dbo.singer_info, dbo.song_info WHERE dbo.singer_info.singer_id=dbo.song_info.singer_id AND song_ab LIKE '{0}'", PY);
                this.dgvPinYinInfo.DataSource = db.dataTable(sql,"PY");
            }
            else
            {
                StringBuilder ZW = new StringBuilder(PinYin);
                for (int i = 0; i < ZW.Length; i++)
                {
                    ZW.Insert(i,"%");
                    i++;
                }
                string sql = string.Format("SELECT song_name,singer_name FROM    dbo.singer_info, dbo.song_info WHERE dbo.singer_info.singer_id=dbo.song_info.singer_id AND song_name LIKE '{0}'", ZW);
                this.dgvPinYinInfo.DataSource = db.dataTable(sql, "PY");
            }
        }

        private void dgvPinYinInfo_DoubleClick(object sender, EventArgs e)
        {
            string songname = this.dgvPinYinInfo.SelectedRows[0].Cells["song_name"].Value.ToString();
            DBHelp db = new DBHelp();
            db.connection();
            string sql = string.Format("SELECT song_name,singer_name,song_url,song_photo_url FROM dbo.song_info,dbo.singer_info  where dbo.singer_info.singer_id=dbo.song_info.singer_id and song_name='{0}'",songname);

            SqlDataReader reader = db.ExecuteReaders(sql.ToString());

            Song song;
            if (reader.Read())
            {
                song = new Song();
                song.SongName = reader["song_name"].ToString();
                song.SongURL = KtvUnit.SongPath+reader["song_url"].ToString();
                PlayList.AddSong(song);              
            }
            reader.Close();
        }

        private void pictureBox2_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "a";
        }

        private void pictureBox1_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "b";
        }

        private void pictureBox3_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "c";
        }

        private void pictureBox4_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "d";
        }

        private void pictureBox5_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "e";
        }

        private void pictureBox6_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "f";
        }

        private void pictureBox7_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "g";
        }

        private void pictureBox8_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "h";
        }

        private void pictureBox9_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "i";
        }

        private void pictureBox10_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "j";
        }

        private void pictureBox26_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "k";
        }

        private void pictureBox11_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "l";
        }

        private void pictureBox12_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "m";
        }

        private void pictureBox13_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "n";
        }

        private void pictureBox14_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "o";
        }

        private void pictureBox15_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "p";
        }

        private void pictureBox16_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "q";
        }

        private void pictureBox17_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "r";
        }

        private void pictureBox18_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "s";
        }

        private void pictureBox19_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "t";
        }

        private void pictureBox20_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "u";
        }

        private void pictureBox21_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "v";
        }

        private void pictureBox22_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "w";
        }

        private void pictureBox23_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "x";
        }

        private void pictureBox24_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "y";
        }

        private void pictureBox25_Click(object sender, EventArgs e)
        {
            textBox1.Text = textBox1.Text + "z";
        }

        private void FrmPinYin_FormClosing(object sender, FormClosingEventArgs e)
        {
            AnimateWindow(this.Handle, 300, FrmMain.AW_SLIDE + FrmMain.AW_VER_POSITIVE);
        }
        public void Binder() 
        {
            string PinYin = this.textBox1.Text;
            StringBuilder PY = new StringBuilder(PinYin);
           
            for (int i = 0; i <= PY.Length; i++)
            {
                PY.Insert(i, "%");
                i++;
            }
            string sql = string.Format("SELECT song_name,singer_name FROM    dbo.singer_info, dbo.song_info WHERE dbo.singer_info.singer_id=dbo.song_info.singer_id AND song_ab LIKE '{0}'", PY);
            DataSet ds = db.dataSet(sql, "PY");
            if (ds.Tables["PY"]!=null)
            {
                ds.Tables["PY"].Clear();
            }
            this.dgvPinYinInfo.DataSource = db.dataTable(sql, "PY");
        }
        private void pictureBox28_Click(object sender, EventArgs e)
        {
            string text = textBox1.Text;
            int index = text.Length - 1;
            if (index >= 0)
            {
                textBox1.Text = text.Remove(index);
            }
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            if (textBox1.Text!=string.Empty)
            {
                Binder();
                this.dgvPinYinInfo.AutoGenerateColumns = false;
            }
            else
            {
                this.dgvPinYinInfo.DataSource=null;
            }

        }

      

        private void tsPYMain_Click(object sender, EventArgs e)
        {
            FrmMain main = new FrmMain();
            main.Show();
            this.Hide();
        }

        private void txPYAgain_Click(object sender, EventArgs e)
        {
            FrmMain main = new FrmMain();
            main.Playsong();
        }
        Song song = new Song();
        private void tsPYCut_Click(object sender, EventArgs e)
        {
            song.playState = SongPlayState.cut;
        }

        private void tsPYYidian_Click(object sender, EventArgs e)
        {
            FrmPlayList list = new FrmPlayList();
            list.Show();
        }

        private void tsPYBack_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }       

类型点歌

  public FrmMain frmMain;
        string connectionStr = "server=.;database=MyKTV;uid=sa";
        DBHelp db = new DBHelp();
        private SqlConnection con;
        private void FrmSongType_Load(object sender, EventArgs e)
        {
            con = new SqlConnection(connectionStr);
            con.Open();
            string sql = "select resource_path from resource_path where resource_id=1";
            string sqlsongpath = "select resource_path from resource_path where resource_id=2";
            SqlCommand cmd2 = new SqlCommand(sqlsongpath,con);
            KtvUnit.SongPath = cmd2.ExecuteScalar().ToString();
            SqlCommand cmd = new SqlCommand(sql, con);
            KtvUnit.ImagePath = cmd.ExecuteScalar().ToString();
            con.Close();
      
            con = new SqlConnection(connectionStr);
            string sql1 = string.Format("select songtype_id,songtype_name,songtype_URL from song_type");
            SqlCommand cmd1 = new SqlCommand(sql1, con);
            SqlDataReader dr;
            try
            {
                con.Open();
                int index = 0;
                lvSongType.Items.Clear();
                imageList1.Images.Clear();
                dr = cmd1.ExecuteReader();
                if (dr.HasRows)
                {
                    while (dr.Read())
                    {
                        string photoURL = KtvUnit.ImagePath + Convert.ToString(dr["songtype_URL"]);
                        //先给ImageList填充图片
                        imageList1.Images.Add(Image.FromFile(photoURL));
                        ListViewItem lvItem = new ListViewItem();
                        lvItem.Text = Convert.ToString(dr["songtype_name"]);
                        lvItem.Tag = Convert.ToString(dr["songtype_id"]);
                        lvItem.ImageIndex = index;
                        lvSongType.Items.Add(lvItem);
                        index++;
                    }
                }
                dr.Close();
            }
            catch (Exception ex)
            {

                MessageBox.Show("系统出现异常" + ex.Message);
            }
            finally
            {
                con.Close();
            }
        }
        private void LoadSongType()
        {
            //读取数据库，读出该歌曲类型的所有歌曲

            StringBuilder sb = new StringBuilder();
            //拼接SQL语句
            sb.AppendFormat("select song_info.song_name,singer_info.singer_name,song_info.song_url from singer_info,song_info where song_info.singer_id=singer_info.singer_id and song_info.songtype_id={0}", Convert.ToInt32(lvSongType.SelectedItems[0].Tag));
            FrmSongList songList = new FrmSongList();

            songList.Sql = sb.ToString();
            songList.Previous = KtvClient.PrevioisForm.SongType;//指定返回的窗体是按歌曲类型点歌
            songList.ShowDialog();
            this.Close();
        }

        private void lvSongType_Click(object sender, EventArgs e)
        {
            LoadSongType();
        }

        private void tsTYSingerMain_Click(object sender, EventArgs e)
        {
            FrmMain main = new FrmMain();
            main.Show();
            this.Hide();
        }

        private void tsTYSingerAgain_Click(object sender, EventArgs e)
        {
            FrmMain main = new FrmMain();
            main.Playsong();
        }
        Song song = new Song();
        private void tsTYSingerCut_Click(object sender, EventArgs e)
        {
            song.playState = SongPlayState.cut;
        }

        private void tsTYSingerYidian_Click(object sender, EventArgs e)
        {
            FrmPlayList list = new FrmPlayList();
            list.Show();
        }

        private void tsTYSingerBack_Click(object sender, EventArgs e)
        {
            FrmMain main = new FrmMain();
            main.Show();
            this.Hide();
        }

金榜排行

  public FrmMain frmMain;
        DBHelp db = new DBHelp();
        string connectionStr = "server=.;database=MyKTV;uid=sa";
        private void FrmJB_Load(object sender, EventArgs e)
        {
            SqlConnection con = new SqlConnection(connectionStr);
            con.Open();
            db.connection();
            string sql = "SELECT song_name,song_play_count FROM dbo.song_info ORDER BY song_play_count DESC";
            string sqlsongpath = "select resource_path from resource_path where resource_id=2";
            SqlCommand cmd = new SqlCommand(sqlsongpath, con);
            KtvUnit.SongPath = cmd.ExecuteScalar().ToString();
            DataSet ds = db.dataSet(sql,"Count");
            this.dgvSongList.DataSource = ds.Tables["Count"].DefaultView;
        }



        private void dgvSongList_Click(object sender, EventArgs e)
        {
            DBHelp db = new DBHelp();
            if (dgvSongList.SelectedRows[0]!=null)
            {
                string songname = this.dgvSongList.SelectedRows[0].Cells["SongName"].Value.ToString();
                db.connection();
                string sql = string.Format("SELECT song_name,singer_name,song_url,song_photo_url FROM dbo.song_info,dbo.singer_info  where dbo.singer_info.singer_id=dbo.song_info.singer_id and song_name='{0}'", songname);

                SqlDataReader reader = db.ExecuteReaders(sql.ToString());

                Song song;
                if (reader.Read())
                {
                    song = new Song();
                    song.SongName = reader["song_name"].ToString();
                    song.SongURL = KtvUnit.SongPath + reader["song_url"].ToString();
                    PlayList.AddSong(song);
                }
                reader.Close();
            }
            else
            {
                MessageBox.Show("空");
            }
            
        }

数字点歌

 public FrmMain frmMain;
        string connectionStr = "server=.;database=MyKTV;uid=sa";
        DBHelp db = new DBHelp();
        private SqlConnection con;
        private void FrmNumber_Load(object sender, EventArgs e)
        {
            con = new SqlConnection(connectionStr);
            con.Open();
            string sqlsongpath = "select resource_path from resource_path where resource_id=2";
            SqlCommand cmd = new SqlCommand(sqlsongpath, con);
            KtvUnit.SongPath = cmd.ExecuteScalar().ToString();
            con.Close();
            for (int i = 1; i <= 4; i++)
            {
                for (int j = 1; j <= 3; j++)
                {
                    Label label = new Label();
                    label.ForeColor = Color.Red;
                    label.BackColor = Color.Pink;
                    label.Font=new System.Drawing.Font("华文彩云",20);
                    label.TextAlign = ContentAlignment.MiddleCenter;
                    label.Click += label_Click;
                    this.MouseMove += FrmNumber_MouseMove;
                    label.MouseHover += label_MouseHover;
                    label.Size = new System.Drawing.Size(80, 40);
                    label.Text = j.ToString();
                    if (i > 1)
                    {
                        label.Text = (j + i + 1).ToString();
                    }
                    if (i > 2)
                    {
                        label.Text = (j + i + 3).ToString();
                    }
                    if (i > 3)
                    {
                        label.Text = (j + i + 5).ToString();
                    }                                  
                    label.Location = new Point(40 + 120 * j, 40 + 60 * i);
                    this.Controls.Add(label);
                }
            }
        }

已点列表

  private void FrmPlayList_Load(object sender, EventArgs e)
        {
            SongList();
        }
       
        public  void SongList() 
        {
            lvSong.Items.Clear();
            for (int i = 0; i < PlayList.SongList.Length; i++)
            {
                if (PlayList.SongList[i]!=null)
                {
                    ListViewItem item = new ListViewItem();
                    item.Text = PlayList.SongList[i].SongName;
                    item.Tag = i;
                    string playstate = PlayList.SongList[i].PlayState == SongPlayState.unplayed ? "未播放" : "已播";
                    item.SubItems.Add(playstate);
                    lvSong.Items.Add(item);
                }
            }
        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            this.Close();
        }