C# KTV 系统 SQL数据库连接 C# 应用窗体

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五道口 北大青鸟校区

KTV项目

指导老师: 袁玉明

SQL数据库关系图

第一步:

  1  PRivate void DoubleClicklvContry()   2         {  3             if (this.lvtype.SelectedItems[0]!=null)  4             {  5                 this.lvContry.Visible = true;  6                 this.lvtype.Visible = false;  7                 type = this.lvtype.SelectedItems[0].Tag.ToString();  8                 this.lvContry.Location = this.lvtype.Location;  9                 lvContry.Dock = DockStyle.Fill; 10             } 11             string sql = "select singertype_id,singertype_name,singertype_imageURL from singer_type"; 12             cmd = new SqlCommand(sql, con.Conntion); 13             try 14             { 15                 con.OpenConntion(); 16                 SqlDataReader reader = cmd.ExecuteReader(); 17                 if (this.lvContry.Items != null) 18                 { 19                     lvSinger.Items.Clear(); 20                 } 21                 if (reader.HasRows) 22                 { 23                     int index = 0; 24                     while (reader.Read()) 25                     { 26                         ListViewItem item = new ListViewItem(); 27                         item.Text = reader[1].ToString(); 28                         item.Tag = reader[0].ToString();  29                         this.imageList2.Images.Add(Image.FromFile(@"E:/KTV/SingerTypeIamge/" + reader[2].ToString())); 30                         item.ImageIndex =index; 31                         this.lvContry.Items.Add(item); 32                         index++; 33                     } 34                 } 35                 reader.Close(); 36             } 37             catch (Exception ex) 38             { 39                 MessageBox.Show(ex.Message); 40             } 41             finally  42             { 43                 con.CloseConntion(); 44             } 45         } 46  47  48 第二部: 49         private void lvtype_DoubleClick_1(object sender, EventArgs e) 50         { 51             DoubleClicklvContry(); 52         } 53         /// <summary> 54         /// 给lvSinger添加数据 55         /// </summary> 56         private void DoubleClicklvSinger()  57         { 58             if (this.lvContry.SelectedItems[0]!=null) 59             { 60                 this.lvSinger.Visible = true; 61                 this.lvContry.Visible = false; 62                 this.lvSinger.Location = this.lvContry.Location; 63                 this.lvSinger.Dock = DockStyle.Fill; 64  65                 string sql = string.Format("select singer_id,singer_name,singer_photo_url from singer_info where singer_sex='{0}' and singertype_id={1}", 66                 type,Convert.ToInt32(this.lvContry.SelectedItems[0].Tag)); 67                 cmd=new SqlCommand(sql,con.Conntion); 68                 try 69                 { 70                     con.OpenConntion(); 71                     //imageList3.Images.Clear(); 72                     SqlDataReader reader = cmd.ExecuteReader(); 73                     if (this.lvSinger.Items!=null) 74                     { 75                         lvSinger.Items.Clear(); 76                     } 77                     if (reader.HasRows) 78                     { 79                         int index = 0; 80                         while (reader.Read()) 81                         { 82                             ListViewItem item = new ListViewItem(); 83                             item.Text = reader[1].ToString(); 84                             item.Tag = reader[0].ToString(); 85                             this.imageList3.Images.Add(Image.FromFile(@"E:/KTV/singerPhoto/" + reader[2].ToString())); 86                             item.ImageIndex = index; 87                             this.lvSinger.Items.Add(item); 88                             index++; 89                         } 90                     } 91                     reader.Close(); 92                 } 93                 catch (Exception ex) 94                 { 95                     MessageBox.Show(ex.Message); 96                 } 97                 finally { 98                     con.CloseConntion(); 99                 }100             }101         }102 103 

104 第三部: 查找到该地区的歌手的歌曲

 1    private void lvContry_DoubleClick(object sender, EventArgs e) 2         { 3             DoubleClicklvSinger(); 4         }        private void DoubleClickSong()  5         { 6             if (this.lvSinger.SelectedItems[0]!=null) 7             { 8                  string sql = string.Format("select song_id,song_name,song_url,singer_name from song_info,singer_info"+ 9                 " where song_info.singer_id=singer_info.singer_id and singer_info.singer_id={0}",Convert.ToInt32(this.lvSinger.SelectedItems[0].Tag));10                  FrmSong fs = new FrmSong();11                  fs.sql = sql;12 13                  fs.Show();14                  this.Hide();15             }

第四部: 选中歌手信息数据库连接↓

1   private void FrmSong_Load(object sender, EventArgs e)2         {3            4             adapter = new SqlDataAdapter(sql, db.Conntion);5             adapter.Fill(ds, "song_info");6       7             this.dataGridView1.DataSource = ds.Tables["song_info"];8             this.dataGridView1.AutoGenerateColumns = false;

以点歌曲传惨的列表

 public string Name { get; set; }        public string age { get; set; }        private void BOFANG_Load(object sender, EventArgs e)        {            this.listView1.Items.Clear();            foreach (Song item in ListSong.list)            {                ListViewItem lvitem = new ListViewItem(item.SongName);                lvitem.SubItems.Add(item.SongPath);                string sate = item.Sate == Sateze.unPaly ? "未播放" : "已播放";                lvitem.SubItems.Add(sate);                this.listView1.Items.Add(lvitem);

播放音乐原理图

第五部:  if 判定DATA 窗体传惨传送到以点歌曲中private void dataGridView1_DoubleClick(object sender, EventArgs e)        {            if (this.dataGridView1.SelectedRows[0] != null)            {                BOFANG dd = new BOFANG();                Song song = new Song();                song.SongName = this.dataGridView1.SelectedRows[0].Cells[3].Value.ToString();                song.SongPath = this.dataGridView1.SelectedRows[0].Cells[2].Value.ToString();                dd.Name = song.SongName;                ListSong.AddSong(song);                                MessageBox.Show("添加成功,请在已点歌曲中查看!!!");第六步:拼音点歌 private void button1_Click(object sender, EventArgs e)        {            string en = textBox1.Text;            SqlConnection con = new SqlConnection(Sql.str);            string sql =string.Format( "select * from song_info where  song_ab like '"+en+"%'");         SqlDataAdapter da = new SqlDataAdapter(sql,con);            DataSet ds = new DataSet();            da.Fill(ds, "song_info");            dataGridView1.DataSource = ds.Tables["song_info"];            SqlCommand cmd = new SqlCommand(sql,con);            try            {                con.Open();                int count = cmd.ExecuteNonQuery();                if (count > 0)                {                    MessageBox.Show("查找成功");                }                          }            catch (Exception)            {                MessageBox.Show("网络异常请检查网络或者SQL 数据库!!!");                con.Close();

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