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:

  private void DoubleClicklvContry()
         {
             if (this.lvtype.SelectedItems[]!=null)
             {
                 this.lvContry.Visible = true;
                 this.lvtype.Visible = false;
                 type = this.lvtype.SelectedItems[].Tag.ToString();
                 this.lvContry.Location = this.lvtype.Location;
                 lvContry.Dock = DockStyle.Fill;
             }
             string sql = "select singertype_id,singertype_name,singertype_imageURL from singer_type";
             cmd = new SqlCommand(sql, con.Conntion);
             try
             {
                 con.OpenConntion();
                 SqlDataReader reader = cmd.ExecuteReader();
                 if (this.lvContry.Items != null)
                 {
                     lvSinger.Items.Clear();
                 }
                 if (reader.HasRows)
                 {
                     int index = ;
                     while (reader.Read())
                     {
                         ListViewItem item = new ListViewItem();
                         item.Text = reader[].ToString();
                         item.Tag = reader[].ToString();
                         this.imageList2.Images.Add(Image.FromFile(@"E:\KTV\SingerTypeIamge\" + reader[].ToString()));
                         item.ImageIndex =index;
                         this.lvContry.Items.Add(item);
                         index++;
                     }
                 }
                 reader.Close();
             }
             catch (Exception ex)
             {
                 MessageBox.Show(ex.Message);
             }
             finally
             {
                 con.CloseConntion();
             }
         }

 第二部:
         private void lvtype_DoubleClick_1(object sender, EventArgs e)
         {
             DoubleClicklvContry();
         }
         /// <summary>
         /// 给lvSinger添加数据
         /// </summary>
         private void DoubleClicklvSinger()
         {
             if (this.lvContry.SelectedItems[]!=null)
             {
                 this.lvSinger.Visible = true;
                 this.lvContry.Visible = false;
                 this.lvSinger.Location = this.lvContry.Location;
                 this.lvSinger.Dock = DockStyle.Fill;

                 string sql = string.Format("select singer_id,singer_name,singer_photo_url from singer_info where singer_sex='{0}' and singertype_id={1}",
                 type,Convert.ToInt32(this.lvContry.SelectedItems[].Tag));
                 cmd=new SqlCommand(sql,con.Conntion);
                 try
                 {
                     con.OpenConntion();
                     //imageList3.Images.Clear();
                     SqlDataReader reader = cmd.ExecuteReader();
                     if (this.lvSinger.Items!=null)
                     {
                         lvSinger.Items.Clear();
                     }
                     if (reader.HasRows)
                     {
                         int index = ;
                         while (reader.Read())
                         {
                             ListViewItem item = new ListViewItem();
                             item.Text = reader[].ToString();
                             item.Tag = reader[].ToString();
                             this.imageList3.Images.Add(Image.FromFile(@"E:\KTV\singerPhoto\" + reader[].ToString()));
                             item.ImageIndex = index;
                             this.lvSinger.Items.Add(item);
                             index++;
                         }
                     }
                     reader.Close();
                 }
                 catch (Exception ex)
                 {
                     MessageBox.Show(ex.Message);
                 }
                 finally {
                     con.CloseConntion();
                 }
             }
         }

104 第三部:  查找到该地区的歌手的歌曲

    private void lvContry_DoubleClick(object sender, EventArgs e)
         {
             DoubleClicklvSinger();
         }        private void DoubleClickSong()
         {
             if (this.lvSinger.SelectedItems[]!=null)
             {
                  string sql = string.Format("select song_id,song_name,song_url,singer_name from song_info,singer_info"+
                 " where song_info.singer_id=singer_info.singer_id and singer_info.singer_id={0}",Convert.ToInt32(this.lvSinger.SelectedItems[].Tag));
                  FrmSong fs = new FrmSong();
                  fs.sql = sql;

                  fs.Show();
                  this.Hide();
             }

第四部:   选中歌手信息数据库连接↓

   private void FrmSong_Load(object sender, EventArgs e)
         {

             adapter = new SqlDataAdapter(sql, db.Conntion);
             adapter.Fill(ds, "song_info");

             this.dataGridView1.DataSource = ds.Tables["song_info"];
             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[] != null)
            {
                BOFANG dd = new BOFANG();
                Song song = new Song();
                song.SongName = this.dataGridView1.SelectedRows[].Cells[].Value.ToString();
                song.SongPath = this.dataGridView1.SelectedRows[].Cells[].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 > )
                {
                    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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