MyKTV项目总结

 1  public void ShowSingerDiQu() 
 2         {
 3              if (listView1.SelectedItems[0]!=null)
 4             {
 5                 listView1.Visible = false;
 6                 listView2.Visible = true;
 7                 listView2.Location = listView1.Location;
 8              
 9                 this.SingerType = Convert.ToString(listView1.SelectedItems[0].Tag);
10             }
11             string sql = "select singertype_name,singertype_id from singer_type";
12             SqlCommand cmd = new SqlCommand(sql,db.Conection);
13             SqlDataReader sdr;
14             try
15             {
16                 db.OpenConnection();
17                 sdr = cmd.ExecuteReader();
18                 listView1.Items.Clear();
19                 if (sdr.HasRows)
20                 {
21                     int result = 0;
22                     while (sdr.Read())
23                     {
24                         ListViewItem lvitem = new ListViewItem();
25                         string typename = Convert.ToString(sdr["singertype_name"]);
26                         int typeid = Convert.ToInt32(sdr["singertype_id"]);
27                         lvitem.Text = typename;
28                         lvitem.Tag = typeid;
29                         lvitem.ImageIndex = result;
30                         listView2.Items.Add(lvitem);
31                         result++;
32                     }
33                     sdr.Close();
34                 }
35             }
36             catch (Exception ex)
37             {
38                 MessageBox.Show("第二个系统报错" + ex.Message);
39             }
40             finally 
41             {
42                 db.CloseConnection();
43             }
44         }

 1  /// <summary>
 2         /// 读取对应地区的歌手名称
 3         /// </summary>
 4         public void ShowSingerName() 
 5         {
 6             if (listView2.SelectedItems[0]!=null)
 7             {
 8                 listView2.Visible = false;
 9                 lvName.Visible = true;
10                 lvName.Location = listView1.Location;
11                 SingerId = Convert.ToInt32(listView2.SelectedItems[0].Tag);
12                 StringBuilder sb = new StringBuilder();
13                 string sum = SingerType;
14                 if (sum!="组合")
15                 {
16                     sum = SingerType == "女歌手" ? "男" : "女";
17                 }
18                 string sql = string.Format("select singer_name,singer_photo_url,singer_id from singer_info where singertype_id=‘{0}‘ and singer_sex=‘{1}‘", SingerId,sum);
19                 SqlCommand cmd = new SqlCommand(sql, db.Conection);
20                 try
21                 {
22                     db.OpenConnection();
23                     SqlDataReader read = cmd.ExecuteReader();
24                    
25                         //歌手头像索引
26                         int imageindex = 0;
27                         //清空图片集合
28                         imageName.Images.Clear();
29                         //清空listview列表集合
30                         lvName.Items.Clear();
31                         if (read.HasRows)
32                         {
33                             while (read.Read())
34                             {
35                                 //图片的地址
36                                 string path = KtvUtil.FilePath + @"\" + Convert.ToString(read["singer_photo_url"]);
37                                 //图片路径装载到imagelist
38                                 imageName.Images.Add(Image.FromFile(path));
39                                 //将类型装载到集合中去
40                                 ListViewItem lvitem = new ListViewItem();
41                                 string typename = Convert.ToString(read["singer_name"]);
42                                 int typeid = Convert.ToInt32(read["singer_id"]);
43                                 lvitem.Text = typename;
44                                 lvitem.Tag = typeid;
45                                 lvitem.ImageIndex = imageindex;
46                                 lvName.Items.Add(lvitem);
47                                 imageindex++;
48                             }
49                             read.Close();
50                         }
51                     }               
52                 catch (Exception ex)
53                 {
54                     MessageBox.Show("第三个系统报错!" + ex.Message);
55                 }
56                 finally 
57                 {
58                     db.CloseConnection();
59                 }
60             }
61            
62         }

 1 public void ShowList() 
 2         {
 3             //定义一个StringBuilder对象
 4             StringBuilder sb = new StringBuilder();
 5             //sql语句
 6             string sql = string.Format("select song_id,song_name,singer_name=‘{0}‘,song_url from song_info where singer_id={1}",lvName.SelectedItems[0].Text,Convert.ToInt32(lvName.SelectedItems[0].Tag));
 7             //定义歌曲列表窗体的对象
 8             FrmSongList sl=new FrmSongList();
 9            //把sql语句传到第三个窗体上
10             sl.Sql=sql;
11             sl.ShowDialog();
12             this.Close();
13         }

 1      //定义一个集合存放歌曲
 2        public static SongList[] song=new SongList[50];
 3        //定义一个数组索引
 4        public static int selectindex=0;
 5        /// <summary>
 6        /// 添加歌曲
 7        /// </summary>
 8        /// <param name="sl"></param>
 9        /// <returns></returns>
10        public static void AddSong(SongList sl) 
11        {
12            //记录歌曲是否添加成功
13            for (int i = 0; i < song.Length; i++)
14            {
15                if (song[i]==null)
16                {
17                    //把歌曲类里的歌曲添加到数组中
18                    song[i] = sl;
19                    //添加成功
20                    break;
21                }
22            }
23 
24        }

 1   /// <summary>
 2        /// 播放歌曲方法
 3        /// </summary>
 4        /// <returns></returns>
 5        public static SongList GetSong() 
 6        {
 7            if (song[selectindex]!=null)
 8            {
 9                return song[selectindex];
10            }
11            else
12            {
13                return null;
14            }
15        }

 1  public enum PalySongState 
 2     {
 3        //未播放 , 播放, 重播,切歌
 4        unplayed,played,again,cut
 5     }
 6     /// <summary>
 7     /// 歌曲播放类
 8     /// </summary>
 9      public class SongList
10     {
11          //歌曲名称
12         private string SongName;
13          //歌曲路径
14         private string SongUl;
15          //歌曲状态
16         private string SongState;
17 
18         public string SongState1
19         {
20             get { return SongState; }
21             set { SongState = value; }
22         }
23 
24         public string SongUl1
25         {
26             get { return SongUl; }
27             set { SongUl = value; }
28         }
29 
30         public string SongName1
31         {
32             get { return SongName; }
33             set { SongName = value; }
34         }
35 
36          //把当前的播放状态设置为未播放状态
37        private  PalySongState playSong = PalySongState.unplayed;
38 
39         public  PalySongState PlaySong
40         {
41             get { return playSong; }
42             set { playSong = value; }
43         }
44          /// <summary>
45          /// 将未播放状态改为播放状态
46          /// </summary>
47         public void PalyState() 
48         {
49             this.PlaySong = PalySongState.played;
50         }
51          /// <summary>
52          /// 将歌曲重新播放
53          /// </summary>
54         public void AgainState() 
55         {
56             this.PlaySong = PalySongState.again;
57         }
58          /// <summary>
59          /// 切歌状态
60          /// </summary>
61         public void CutState() 
62         {
63             this.PlaySong = PalySongState.cut;
64         }

 1  private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
 2         {
 3             if (this.dataGridView1.SelectedRows[0] != null)
 4             {
 5                 SongList song = new SongList();
 6                 //歌曲名称
 7                 song.SongName1 = this.dataGridView1.SelectedRows[0].Cells[0].Value.ToString();
 8                 //歌曲路径
 9                 song.SongUl1 = this.dataGridView1.SelectedRows[0].Cells[2].Value.ToString();
10                 MessageBox.Show(song.SongUl1);
11                 PalyList.AddSong(song);
12 
13             }
14         }

 1  private void FrmOrderedSongList_Load(object sender, EventArgs e)
 2         {
 3             //遍历播放类里面的数组
 4             foreach (SongList item in PalyList.song)
 5             {
 6                 
 7                 if (item!=null)
 8                 {
 9                     ListViewItem lvitem = new ListViewItem(item.SongName1);
10                     string type = item.PlaySong == PalySongState.unplayed ? "未播放" : "已播放";
11                     lvitem.SubItems.Add(type);
12                     this.listView1.Items.Add(lvitem);                   
13                 }
14                 
15             }
16         }

1  //定义一个静态变量存放图片路径
2        public static string FilePath="";
3        //定义一个静态变量存放歌曲的路径
4        public static string SongPath = "";

 1 private void Form1_Load(object sender, EventArgs e)
 2         {
 3             //读取路径表中的图片路径放到filepath上
 4             string sql = "select resource_path from resource_path where resource_id=1";
 5             SqlCommand cmd = new SqlCommand(sql,db.Conection);
 6             db.OpenConnection();
 7             KtvUtil.FilePath = cmd.ExecuteScalar().ToString();
 8             db.CloseConnection();
 9 
10             //读取歌曲的路径
11             string sql2 = "select resource_path from resource_path where resource_id=2";
12             SqlCommand cmd2 = new SqlCommand(sql2, db.Conection);
13             db.OpenConnection();
14             KtvUtil.SongPath = cmd2.ExecuteScalar().ToString();
15             db.CloseConnection();
16      
17         }

 1 /// <summary>
 2         /// 绑定dgv数据
 3         /// </summary>
 4         public void ShowPinYin(string ab) 
 5         {
 6             ab = textBox1.Text;
 7             string sql = "select singer_info.singer_name,song_info.song_name,song_url from singer_info,song_info where singer_info.singer_id=song_info.singer_id";
 8             if (ab!=string.Empty)
 9             {
10                 sql = string.Format(sql+" and song_info.song_ab like ‘{0}%‘",ab);
11             }
12             sda.SelectCommand = new SqlCommand(sql,db.Conection);
13             if (ds.Tables["songinfo"]!=null)
14             {
15                 ds.Tables["songinfo"].Clear();
16             }
17             sda.Fill(ds,"songinfo");
18             DataTable table=ds.Tables["songinfo"];
19             this.dataGridView1.DataSource = ds.Tables["songinfo"];
20             //return;
21            
22         }

 1  /// <summary>
 2         /// 查询按钮
 3         /// </summary>
 4         /// <param name="sender"></param>
 5         /// <param name="e"></param>
 6         private void button1_Click(object sender, EventArgs e)
 7         {
 8             if (this.textBox1!=null)
 9             {
10                 this.ShowPinYin(this.textBox1.Text);
11             }
12             else
13             {
14                 MessageBox.Show("查询内容不可为空,请填写查询信息!","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
15             }
16             ShowPinYin(string.Empty);
17         }

 1 public void FrmOrderBySongType_Load(object sender, EventArgs e)
 2         {
 3 
 4             int index = 0;
 5             string sql = "select songtype_id,songtype_name,songtype_URL from song_type";
 6             SqlCommand cmd = new SqlCommand(sql, db.Conection);
 7             try
 8             {
 9                 db.OpenConnection();
10                 SqlDataReader reader = cmd.ExecuteReader();
11                 if (reader.HasRows)
12                 {
13                     while (reader.Read())
14                     {
15                         string path = KtvUtil.FilePath +"\\"+ Convert.ToString(reader["songtype_URL"]);
16                         imageList1.Images.Add(Image.FromFile(path));
17                         ListViewItem lvitem = new ListViewItem();
18                         string typename = Convert.ToString(reader["songtype_name"]);
19                         int typeid = Convert.ToInt32(reader["songtype_id"]);
20                         lvitem.Text = typename;
21                         lvitem.Tag = typeid;
22                         lvitem.ImageIndex = index;
23                         this.listView1.Items.Add(lvitem);
24                         index++;
25                       
26                     }
27                 }
28                 reader.Close();
29             }
30             catch (Exception ex)
31             {
32                 MessageBox.Show("系统出错!"+ex.Message);
33             }
34             finally {
35                 db.CloseConnection();
36             }
37             this.dataGridView1.Visible = false;
38         }

 1 public void ShowDGV()
 2         {
 3 
 4             string sql = "SELECT song_name,singer_name FROM singer_info,song_info WHERE singer_info.singer_id=song_info.singer_id AND songtype_id={0}";
 5             sql = string.Format(sql + " AND songtype_id={0}", Convert.ToInt32(listView1.SelectedItems[0].Tag));
 6             sda.SelectCommand = new SqlCommand(sql, db.Conection);
 7             if (ds.Tables["num"] != null)
 8             {
 9                 ds.Tables["num"].Clear();
10             }
11             sda.Fill(ds, "num");
12             this.dataGridView1.DataSource = ds.Tables["num"];
13 
14         }

 1   public void FrmOrderByWordCount_Load(object sender, EventArgs e)
 2         {
 3             for (int i = 1; i <= 2; i++)
 4             {   
 5                 for (int j = 1; j <= 6; j++)
 6                 {
 7                     Label lbl = new Label();
 8                     lbl.Text = "第" + j + "个字";
 9                     if (i ==2)
10                     {
11                         lbl.Text = "第" + (j+6) + "个字";
12                     }
13                     //背景颜色
14                     lbl.BackColor = Color.Red;
15                     //字体大小
16                     lbl.Size = new Size(55, 25);
17                     //字体居中
18                     lbl.TextAlign = ContentAlignment.MiddleCenter;
19                     //点击事件
20                     lbl.Click += lbl_Click;
21                     //位置
22                     lbl.Location = new Point(50 + 100 * i, 50 + 40 * j);
23                     this.Controls.Add(lbl);
24                 }
25             }
26             //隐藏dgv
27             this.dataGridView1.Visible = false;
28         }

 1  int mains;
 2         void lbl_Click(object sender, EventArgs e)
 3         {
 4             Label label = (Label)sender;
 5             //文本
 6             string main = label.Text;
 7             //文本的长度
 8             int sum = main.Length;     
 9             if (sum == 4)
10             {
11                 mains = int.Parse(main.Substring(1, 1));
12             }
13             else
14             {
15                 mains = int.Parse(main.Substring(1,2));
16             }
17             //MessageBox.Show(mains.ToString());
18             //释放dgv
19             this.dataGridView1.Visible = true;
20 
21             ShowDGV();
22             
23         }
24         public void ShowDGV() 
25         {
26             if (ds.Tables["num"] != null)
27             {
28                 ds.Tables["num"].Clear();
29             }
30             string sql = "select song_info.song_name,singer_info.singer_name,song_info.song_url from song_info,singer_info where song_info.singer_id=singer_info.singer_id ";
31             sql = string.Format(sql + " and song_info.song_word_count={0}", mains.ToString());
32             sda.SelectCommand = new SqlCommand(sql,db.Conection);
33             
34             sda.Fill(ds,"num");
35             this.dataGridView1.DataSource=ds.Tables["num"];
36 
37         }

 1   /// <summary>
 2        /// 切歌方法
 3        /// </summary>
 4        /// <param name="index"></param>
 5        public static void CutSong(int index) 
 6        {
 7            //歌曲的位置
 8            int num;
 9            if (index==-1)
10            {
11                num = selectindex;
12            }
13            else
14            {
15                num = index;
16            }
17            song[selectindex].CutState();
18            while (song[num]!=null)
19            {
20                song[num] = song[num + 1];
21                num++;
22                if (num==song.Length)
23                {
24                    song[num] = null;
25                }
26            }
27                         
28        }

 1  /// <summary>
 2         /// 切歌
 3         /// </summary>
 4         /// <param name="sender"></param>
 5         /// <param name="e"></param>
 6         private void toolStripButton6_Click(object sender, EventArgs e)
 7         {
 8             if (MessageBox.Show("确定要切歌吗?", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
 9             {
10                 PalyList.CutSong(-1);
11             }
12         }