KTV项目 SQL数据库的应用 结合C#应用窗体
五道口北大青鸟校区
KTV项目
指导老师:袁玉明
歌曲播放原理
SQL数据库关系图
C#解决方案类图
第一步:创建数据库连接方法和打开方法和关闭方法!
public class DBHelper
{
private string str = "server=.;database=MyKtv;uid=sa";
private SqlConnection _conection;
public SqlConnection Conection
{
get
{
if (_conection==null)
{
_conection = new SqlConnection(str);
}
return _conection;
}
}
/// <summary>
/// 打开方法
/// </summary>
public void OpenConnection()
{
if (Conection.State == ConnectionState.Closed)
{
Conection.Open();
} if (Conection.State == ConnectionState.Broken)
{
Conection.Close();
Conection.Open();
}
}
/// <summary>
/// 关闭方法`
/// </summary>
public void CloseConnection()
{
if (Conection.State == ConnectionState.Open && Conection.State == ConnectionState.Broken)
{
Conection.Close();
}
}
第二步:歌曲首页
歌曲首页:用到了窗体之间的转换和读取路径表中的图片路径放到filepath上
public partial class FormMain : Form
{
DBHelper db = new DBHelper();
public FormMain()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//读取路径表中的图片路径放到filepath上
string sql = "select resource_path from resource_path where resource_id=1";
SqlCommand cmd = new SqlCommand(sql,db.Conection);
db.OpenConnection();
KtvUtil.FilePath = cmd.ExecuteScalar().ToString();
db.CloseConnection();
}
private void pictureBox1_Click(object sender, EventArgs e)
{
//打开明星点歌窗体
FrmSinger frmSinger = new FrmSinger();
frmSinger.Show();
}
private void toolStripButton4_Click(object sender, EventArgs e)
{
this.Close();
}
private void pictureBox4_Click(object sender, EventArgs e)
{
//打开拼音点歌窗体
FrmOrderBySongName fobsn = new FrmOrderBySongName();
fobsn.ShowDialog();
}
第三步:歌星点歌
歌星点歌:用到了3个ListView之间的跳转,
public partial class FrmSinger : Form
{
DBHelper db = new DBHelper();
public string SingerType = "组合";
;
public FrmSinger()
{
InitializeComponent();
}
private void panel1_Paint(object sender, PaintEventArgs e)
{
}
/// <summary>
/// 点击歌手类型后加载相应的信息
/// </summary>
public void ShowSingerDiQu()
{
]!=null)
{
lvtype.Visible = false;
lvSinger.Visible = true;
lvSinger.Location = lvtype.Location;
].Tag);
}
string sql = "select singertype_name,singertype_id from singer_type";
SqlCommand cmd = new SqlCommand(sql,db.Conection);
SqlDataReader sdr;
try
{
db.OpenConnection();
sdr = cmd.ExecuteReader();
lvtype.Items.Clear();
if (sdr.HasRows)
{
;
while (sdr.Read())
{
ListViewItem lvitem = new ListViewItem();
string typename = Convert.ToString(sdr["singertype_name"]);
int typeid = Convert.ToInt32(sdr["singertype_id"]);
lvitem.Text = typename;
lvitem.Tag = typeid;
lvitem.ImageIndex = result;
lvSinger.Items.Add(lvitem);
result++;
}
sdr.Close();
}
}
catch (Exception ex)
{
MessageBox.Show("第二个系统报错" + ex.Message);
}
finally
{
db.CloseConnection();
}
}
private void listView2_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void FrmOrderBySinger_Load(object sender, EventArgs e)
{
this.lvSinger.Visible = false;
this.lvContry.Visible=false;
}
private void listView1_Click(object sender, EventArgs e)
{
ShowSingerDiQu();
}
/// <summary>
/// 读取对应地区的歌手名称
/// </summary>
public void ShowSingerName()
{
]!=null)
{
lvSinger.Visible = false;
lvContry.Visible = true;
lvContry.Location = lvtype.Location;
SingerId = Convert.ToInt32(lvSinger.SelectedItems[].Tag);
StringBuilder sb = new StringBuilder();
string sum = SingerType;
if (sum!="组合")
{
sum = SingerType == "女歌手" ? "男" : "女";
}
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);
SqlCommand cmd = new SqlCommand(sql, db.Conection);
try
{
db.OpenConnection();
SqlDataReader read = cmd.ExecuteReader();
if (read.HasRows)
{
//歌手头像索引
;
//清空图片集合
imageName.Images.Clear();
//清空listview列表集合
lvContry.Items.Clear();
if (read.HasRows)
{
while (read.Read())
{
//图片的地址
string path = KtvUtil.FilePath + @"" + Convert.ToString(read["singer_photo_url"]);
imageName.Images.Add(Image.FromFile(path));
ListViewItem lvitem = new ListViewItem();
string typename = Convert.ToString(read["singer_name"]);
int typeid = Convert.ToInt32(read["singer_id"]);
lvitem.Text = typename;
lvitem.Tag = typeid;
lvitem.ImageIndex = imageindex;
lvContry.Items.Add(lvitem);
imageindex++;
}
read.Close();
}
}
}
catch (Exception ex)
{
MessageBox.Show("第三个系统报错!" + ex.Message);
}
finally
{
db.CloseConnection();
}
}
}
private void lvName_Click(object sender, EventArgs e)
{
ShowList();
}
private void listView2_Click(object sender, EventArgs e)
{
ShowSingerName();
}
private void listView1_ChangeUICues(object sender, UICuesEventArgs e)
{
}
/// <summary>
/// 打开第三层ListView
/// </summary>
public void ShowList()
{
//定义一个StringBuilder对象
StringBuilder sb = new StringBuilder();
//sql语句
].Text,Convert.ToInt32(lvContry.SelectedItems[].Tag));
//定义歌曲列表窗体的对象
FrmSongList sl=new FrmSongList();
//把sql语句传到第三个窗体上
sl.Sql=sql;
sl.ShowDialog();
this.Close();
}
private void toolStripButton4_Click(object sender, EventArgs e)
{
this.Close();
}
private void toolStripButton1_Click(object sender, EventArgs e)
{
if (lvSinger.Visible)
{
lvSinger.Visible = false;
lvContry.Visible = true;
}
else if (lvContry.Visible)
{
lvContry.Visible = false;
lvtype.Visible = true;
}
else if (lvtype.Visible)
{
FormMain dd = new FormMain();
dd.Show();
this.Close();
}
}
第四步:歌曲列表
歌曲列表:实现点击一下歌曲列表中的一行信息就到以点里面
public partial class FrmSongList : Form
{
DBHelper db = new DBHelper();
DataSet ds = new DataSet();
private string sql = "";
//歌曲的查询语句
public string Sql
{
get { return sql; }
set { sql = value; }
}
public FrmSongList()
{
InitializeComponent();
}
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
//第一步判断datagridView有没有选中的行
//第二步从实例化SongList类
//第三步调取歌曲song类的字段进行赋值(从datagridview中的列赋值);
//第四部把从datagridview中获取到的数据添加到播放类里的数组中
]!=null)
{
SongList song = new SongList();
song.SongName1 = ].Cells[].Value.ToString();
song.SongUl1 = ].Cells[].Value.ToString();
PalyList.AddSong(song);
}
}
private void FrmSongList_Load(object sender, EventArgs e)
{
SqlDataAdapter sda = new SqlDataAdapter(sql,db.Conection);
sda.Fill(ds,"songinfo");
dataGridView1.DataSource = ds.Tables["songinfo"];
}
private void toolStripButton4_Click(object sender, EventArgs e)
{
this.Close();
}
private void toolStripButton6_Click(object sender, EventArgs e)
{
FrmSong frm = new FrmSong();
frm.ShowDialog();
}
第五步:已点歌曲
已点歌曲:进入了就是已播放状态一次往下添加都是未播放,如果到了下面的播放状态就还得改变成已播放
private void FrmOrderedSongList_Load(object sender, EventArgs e)
{
//遍历播放类里面的数组
foreach (SongList item in PalyList.song)
{
if (item!=null)
{
ListViewItem lvitem = new ListViewItem(item.SongName1);
string type = item.PlaySong == PalySongState.unplayed ? "未播放" : "已播放";
lvitem.SubItems.Add(type);
this.listView1.Items.Add(lvitem);
}
}
}
private void toolStripButton1_Click(object sender, EventArgs e)
{
FrmSinger dd = new FrmSinger();
dd.Show();
}
第六步:拼音点歌
public partial class FrmSpeall : Form
{
private DBOpetion db = new DBOpetion();
private SqlDataAdapter adapter = null;
private DataSet ds = new DataSet();
public FrmSpeall()
{
InitializeComponent();
}
[DllImportAttribute("user32.dll")]
private static extern bool AnimateWindow(IntPtr hwnd, int dwTime, int dwFlags);
private void FrmSpeall_Load(object sender, EventArgs e)
{
AnimateWindow(, FrmMain.AW_SLIDE + FrmMain.AW_VER_POSITIVE);
//动态效果可以取消注释
//for (int i = 97; i < 123; i++)
//{
// for (int j = 0; j < 4; j++)
// {
// Label label = new Label();
// label.BackColor = Color.Yellow;
// label.Font=new System.Drawing.Font("宋体",14.25F,System.Drawing.FontStyle.Regular,
// System.Drawing.GraphicsUnit.Point,((byte)(134)));
// label.AutoSize = false;
// label.Size = new System.Drawing.Size(50, 25);
// label.Text = ((char)i).ToString();
// label.TextAlign = ContentAlignment.MiddleCenter;
// label.Location = new Point(60 + (i * 90), 60 + (j * 60));
// label.Parent = panel1;
// }
//}
////for (int i = 97; i < 123; i++)
////{
//// Console.WriteLine((char)i);
////}
}
private void pictureBox1_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "a";
}
private void pictureBox2_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "b";
}
private void pictureBox3_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "c";
}
private void pictureBox4_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "d";
}
private void pictureBox5_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "e";
}
private void pictureBox6_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "f";
}
private void pictureBox7_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "g";
}
private void pictureBox8_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "h";
}
private void pictureBox9_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "i";
}
private void pictureBox10_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "j";
}
private void pictureBox11_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "k";
}
private void pictureBox12_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "l";
}
private void pictureBox13_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "m";
}
private void pictureBox14_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "n";
}
private void pictureBox15_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "o";
}
private void pictureBox16_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "p";
}
private void pictureBox17_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "q";
}
private void pictureBox18_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "r";
}
private void pictureBox19_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "s";
}
private void pictureBox20_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "t";
}
private void pictureBox21_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "u";
}
private void pictureBox22_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "v";
}
private void pictureBox23_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "w";
}
private void pictureBox24_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "x";
}
private void pictureBox25_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "y";
}
private void pictureBox26_Click(object sender, EventArgs e)
{
this.textBox1.Text = this.textBox1.Text + "z";
}
private void button1_Click(object sender, EventArgs e)
{
string text = this.textBox1.Text;
;
)
{
textBox1.Text = text.Remove(index);
}
}
/// <summary>
/// 按拼音查找歌曲
/// </summary>
private void SeleSong()
{
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 song_ab like '%{0}%'",this.textBox1.Text);
adapter = new SqlDataAdapter(sql, db.Conntion);
if (ds.Tables["song_info"]!=null)
{
ds.Tables.Clear();
}
adapter.Fill(ds, "song_info");
this.dataGridView1.DataSource = ds.Tables["song_info"];
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
if (this.textBox1.Text !=string.Empty)
{
SeleSong();
this.dataGridView1.AutoGenerateColumns = false;
}
else
{
this.dataGridView1.DataSource = null;
}
}
private void FrmSpeall_FormClosing(object sender, FormClosingEventArgs e)
{
AnimateWindow(, FrmMain.AW_SLIDE + FrmMain.AW_VER_POSITIVE);
}
private void dataGridView1_DoubleClick(object sender, EventArgs e)
{
] != null)
{
Song song = new Song();
song.SongName = ].Cells[].Value.ToString();
song.SongPath = ].Cells[].Value.ToString();
ListSong.AddSong(song);
MessageBox.Show("添加成功,请在已点歌曲中查看!!!");
this.Close();
}
}
第七部：金榜排行
DataSet sb = new DataSet();
SqlDataAdapter adapter = new SqlDataAdapter();
public FrmOrderWordText()
{
InitializeComponent();
}
private void FrmOrderWordText_Load(object sender, EventArgs e)
{
DBHelper dd = new DBHelper();
string sql = string.Format("select song_name,singer_name,song_play_count from song_info,singer_info where song_info.singer_id=singer_info.singer_id order by song_play_count desc");
adapter.SelectCommand = new SqlCommand(sql, dd.Conection);
adapter.Fill(sb, "song_info");
DataTable table = sb.Tables["song_info"];
foreach (DataRow row in table.Rows)
{
ListViewItem list = ].ToString());
].ToString(),row[].ToString()};
list.SubItems.AddRange(item);
listView1.Items.Add(list);
}
}
private void toolStripButton1_Click(object sender, EventArgs e)
{
this.Close();
}
private void toolStripButton5_Click(object sender, EventArgs e)
{
FrmSong song = new FrmSong();
song.Show();
}
private void toolStripButton6_Click(object sender, EventArgs e)
{
if (MessageBox.Show("确定要切歌吗?", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
PalyList.CutSong(-);
}
}
private void toolStripButton7_Click(object sender, EventArgs e)
{
//PalyList.PlayAgain();
FormMain dd = new FormMain();
dd.palySong();
}
private void toolStripButton2_Click(object sender, EventArgs e)
{
FormMain dd = new FormMain();
dd.Show();
this.Close();
}
第八步：字数点歌
DBHelper db = new DBHelper();
SqlDataAdapter sda = new SqlDataAdapter();
DataSet ds = new DataSet();
public FrmOrderByWordCount()
{
InitializeComponent();
}
/// <summary>
/// 打开主界面
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton2_Click(object sender, EventArgs e)
{
FormMain f = new FormMain();
f.Show();
}
/// <summary>
/// 重唱歌曲
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton7_Click(object sender, EventArgs e)
{
FormMain dd = new FormMain();
dd.palySong();
//PalyList.PlayAgain();
}
/// <summary>
/// 切歌
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton6_Click(object sender, EventArgs e)
{
if (MessageBox.Show("确定要切歌吗?", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
PalyList.CutSong(-);
}
}
/// <summary>
/// 已点歌曲
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton5_Click(object sender, EventArgs e)
{
FrmSong frmList = new FrmSong();
frmList.Show();
}
/// <summary>
/// 返回
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton1_Click(object sender, EventArgs e)
{
this.Close();
}
public void FrmOrderByWordCount_Load(object sender, EventArgs e)
{
string sql2 = "select resource_path from resource_path where resource_id=2";
SqlCommand cmd2 = new SqlCommand(sql2, db.Conection);
db.OpenConnection();
KtvUtil.SongPath = cmd2.ExecuteScalar().ToString();
db.CloseConnection();
; i <= ; i++)
{
; j<= ; j++)
{
Label label = new Label();
label.Text = "" + i + "";
)
{
label.Text = ) + "";
}
)
{
label.Text = ) + "";
}
label.Size = , );
label.TextAlign = ContentAlignment.MiddleCenter;
label.Font = );
label.BackColor = Color.Pink;
label.Click += label_Click;
label.Location = + * j, + * i);
this.Controls.Add(label);
}
}
}
void label_Click(object sender, EventArgs e)
{
DBHelper dd = new DBHelper();
DataSet ds = new DataSet();
Label label = (Label)sender;
string sql = string.Format("select song_name,song_url,singer_name from song_info,singer_info" +
" where song_info.singer_id=singer_info.singer_id and song_word_count={0}", Convert.ToInt32(label.Text));
SqlDataAdapter da = new SqlDataAdapter(sql, dd.Conection);
da.Fill(ds, "song_info");
dataGridView1.DataSource = ds.Tables["song_info"];
this.dataGridView1.Visible = true;
}
private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
].Cells["clnSongName"].Value.ToString();
DBHelper db = new DBHelper();
db.OpenConnection();
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);
SqlCommand cmd = new SqlCommand(sql, db.Conection);
SqlDataReader read = cmd.ExecuteReader();
if (read.Read())
{
SongList song = new SongList();
song.SongName1 = read["song_name"].ToString();
song.SongUl1 = read["song_url"].ToString();
PalyList.AddSong(song);
}
read.Close();
}
}
第九步：类型点歌
/// <summary>
/// 切歌方法
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void toolStripButton6_Click(object sender, EventArgs e)
{
if (MessageBox.Show("确定要切歌吗?", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
PalyList.CutSong(-);
}
}
private void FrmOrderBySongType_Load(object sender, EventArgs e)
{
LoadListView();
}
private void LoadListView()
{
DBHelper db = new DBHelper();
string sql = "select songtype_id,songtype_name,songtype_URL from song_type";
SqlCommand cmd = new SqlCommand(sql, db.Conection);
try
{
db.OpenConnection();
SqlDataReader reader = cmd.ExecuteReader();
if (reader.HasRows)
{
;
while (reader.Read())
{
ListViewItem item = new ListViewItem();
item.Text = reader[].ToString();
item.Tag = reader[].ToString();
].ToString()));
item.ImageIndex = index;
this.listView1.Items.Add(item);
index++;
}
}
reader.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
db.CloseConnection();
}
}
/// <summary>
/// 查找到该类型的歌手的歌曲
/// </summary>
private void DoubleClickSong()
{
] != null)
{
string sql = string.Format("select song_id,song_name,song_url,singer_name from song_info,singer_info" +
].Tag));
FrmSongList fs = new FrmSongList();
fs.Sql = sql;
fs.Show();
}
}
private void toolStripButton1_Click(object sender, EventArgs e)
{
this.Close();
}
private void toolStripButton5_Click(object sender, EventArgs e)
{
FrmSong song = new FrmSong();
song.Show();
}
private void listView1_Click(object sender, EventArgs e)
{
listView1.ToString();
}
private void listView1_DoubleClick(object sender, EventArgs e)
{
DoubleClickSong();
}
private void toolStripButton2_Click(object sender, EventArgs e)
{
FormMain dd = new FormMain();
dd.Show();
this.Close();
}
private void toolStripButton7_Click(object sender, EventArgs e)
{
FormMain dd = new FormMain();
dd.palySong();
}
待续…………………………
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