C# KTV 系统 SQL数据库连接 C# 应用窗体

  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 

 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             }

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;

 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);

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();