时间：2021-07-01 10:21:17 帮助过：4人阅读
KTV项目
指导老师:袁玉明
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!
1 public class DBHelper 2 { 3 private string str = "server=.;database=MyKtv;uid=sa"; 4 private SqlConnection _conection; 5 6 public SqlConnection Conection 7 { 8 get 9 { 10 if (_conection==null) 11 { 12 _conection = new SqlConnection(str); 13 } 14 return _conection; 15 } 16 } 17 /// <summary> 18 /// 打开方法 19 /// </summary> 20 public void OpenConnection() 21 { 22 if (Conection.State == ConnectionState.Closed) 23 { 24 Conection.Open(); 25 } if (Conection.State == ConnectionState.Broken) 26 { 27 Conection.Close(); 28 Conection.Open(); 29 } 30 } 31 /// <summary> 32 /// 关闭方法` 33 /// </summary> 34 public void CloseConnection() 35 { 36 if (Conection.State == ConnectionState.Open && Conection.State == ConnectionState.Broken) 37 { 38 Conection.Close(); 39 } 40 41 }
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
1 public partial class FormMain : Form 2 { 3 DBHelper db = new DBHelper(); 4 public FormMain() 5 { 6 InitializeComponent(); 7 } 8 private void Form1_Load(object sender, EventArgs e) 9 { 10 //读取路径表中的图片路径放到filepath上 11 string sql = "select resource_path from resource_path where resource_id=1"; 12 SqlCommand cmd = new SqlCommand(sql,db.Conection); 13 db.OpenConnection(); 14 KtvUtil.FilePath = cmd.ExecuteScalar().ToString(); 15 db.CloseConnection(); 16 } 17 18 private void pictureBox1_Click(object sender, EventArgs e) 19 { 20 //打开明星点歌窗体 21 FrmSinger frmSinger = new FrmSinger(); 22 frmSinger.Show(); 23 } 24 25 private void toolStripButton4_Click(object sender, EventArgs e) 26 { 27 this.Close(); 28 } 29 30 private void pictureBox4_Click(object sender, EventArgs e) 31 { 32 //打开拼音点歌窗体 33 FrmOrderBySongName fobsn = new FrmOrderBySongName(); 34 fobsn.ShowDialog(); 35 }
第三步:歌星点歌
歌星点歌:用到了3个ListView之间的跳转,
1 public partial class FrmSinger : Form 2 { 3 DBHelper db = new DBHelper(); 4 public string SingerType = "组合"; 5 public int SingerId = 0; 6 7 public FrmSinger() 8 { 9 InitializeComponent(); 10 } 11 12 private void panel1_Paint(object sender, PaintEventArgs e) 13 { 14 15 } 16 /// <summary> 17 /// 点击歌手类型后加载相应的信息 18 /// </summary> 19 public void ShowSingerDiQu() 20 { 21 if (lvtype.SelectedItems[0]!=null) 22 { 23 lvtype.Visible = false; 24 lvSinger.Visible = true; 25 lvSinger.Location = lvtype.Location; 26 27 28 this.SingerType = Convert.ToString(lvtype.SelectedItems[0].Tag); 29 } 30 string sql = "select singertype_name,singertype_id from singer_type"; 31 SqlCommand cmd = new SqlCommand(sql,db.Conection); 32 SqlDataReader sdr; 33 try 34 { 35 db.OpenConnection(); 36 sdr = cmd.ExecuteReader(); 37 lvtype.Items.Clear(); 38 if (sdr.HasRows) 39 { 40 int result = 0; 41 while (sdr.Read()) 42 { 43 ListViewItem lvitem = new ListViewItem(); 44 string typename = Convert.ToString(sdr["singertype_name"]); 45 int typeid = Convert.ToInt32(sdr["singertype_id"]); 46 lvitem.Text = typename; 47 lvitem.Tag = typeid; 48 lvitem.ImageIndex = result; 49 lvSinger.Items.Add(lvitem); 50 result++; 51 } 52 sdr.Close(); 53 } 54 } 55 catch (Exception ex) 56 { 57 MessageBox.Show("第二个系统报错" + ex.Message); 58 } 59 finally 60 { 61 db.CloseConnection(); 62 } 63 } 64 65 private void listView2_SelectedIndexChanged(object sender, EventArgs e) 66 { 67 68 } 69 70 private void FrmOrderBySinger_Load(object sender, EventArgs e) 71 { 72 this.lvSinger.Visible = false; 73 this.lvContry.Visible=false; 74 } 75 76 private void listView1_Click(object sender, EventArgs e) 77 { 78 ShowSingerDiQu(); 79 } 80 /// <summary> 81 /// 读取对应地区的歌手名称 82 /// </summary> 83 public void ShowSingerName() 84 { 85 if (lvSinger.SelectedItems[0]!=null) 86 { 87 lvSinger.Visible = false; 88 lvContry.Visible = true; 89 lvContry.Location = lvtype.Location; 90 SingerId = Convert.ToInt32(lvSinger.SelectedItems[0].Tag); 91 StringBuilder sb = new StringBuilder(); 92 string sum = SingerType; 93 if (sum!="组合") 94 { 95 sum = SingerType == "女歌手" ? "男" : "女"; 96 } 97 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); 98 SqlCommand cmd = new SqlCommand(sql, db.Conection); 99 try 100 { 101 db.OpenConnection(); 102 SqlDataReader read = cmd.ExecuteReader(); 103 if (read.HasRows) 104 { 105 //歌手头像索引 106 int imageindex = 0; 107 //清空图片集合 108 imageName.Images.Clear(); 109 //清空listview列表集合 110 lvContry.Items.Clear(); 111 if (read.HasRows) 112 { 113 while (read.Read()) 114 { 115 //图片的地址 116 string path = KtvUtil.FilePath + @"" + Convert.ToString(read["singer_photo_url"]); 117 imageName.Images.Add(Image.FromFile(path)); 118 ListViewItem lvitem = new ListViewItem(); 119 string typename = Convert.ToString(read["singer_name"]); 120 int typeid = Convert.ToInt32(read["singer_id"]); 121 lvitem.Text = typename; 122 lvitem.Tag = typeid; 123 lvitem.ImageIndex = imageindex; 124 lvContry.Items.Add(lvitem); 125 imageindex++; 126 } 127 read.Close(); 128 } 129 } 130 131 } 132 catch (Exception ex) 133 { 134 MessageBox.Show("第三个系统报错!" + ex.Message); 135 } 136 finally 137 { 138 db.CloseConnection(); 139 } 140 } 141 142 } 143 private void lvName_Click(object sender, EventArgs e) 144 { 145 ShowList(); 146 } 147 148 private void listView2_Click(object sender, EventArgs e) 149 { 150 ShowSingerName(); 151 } 152 153 private void listView1_ChangeUICues(object sender, UICuesEventArgs e) 154 { 155 156 } 157 /// <summary> 158 /// 打开第三层ListView 159 /// </summary> 160 public void ShowList() 161 { 162 //定义一个StringBuilder对象 163 StringBuilder sb = new StringBuilder(); 164 //sql语句 165 string sql = string.Format("select song_id,song_name,singer_name=‘{0}‘,song_url from song_info where singer_id={1}",lvContry.SelectedItems[0].Text,Convert.ToInt32(lvContry.SelectedItems[0].Tag)); 166 //定义歌曲列表窗体的对象 167 FrmSongList sl=new FrmSongList(); 168 //把sql语句传到第三个窗体上 169 sl.Sql=sql; 170 sl.ShowDialog(); 171 this.Close(); 172 } 173 174 private void toolStripButton4_Click(object sender, EventArgs e) 175 { 176 this.Close(); 177 } 178 179 private void toolStripButton1_Click(object sender, EventArgs e) 180 { 181 if (lvSinger.Visible) 182 { 183 lvSinger.Visible = false; 184 lvContry.Visible = true; 185 } 186 else if (lvContry.Visible) 187 { 188 lvContry.Visible = false; 189 lvtype.Visible = true; 190 } 191 else if (lvtype.Visible) 192 { 193 FormMain dd = new FormMain(); 194 dd.Show(); 195 this.Close(); 196 } 197 }
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
1 public partial class FrmSongList : Form 2 { 3 DBHelper db = new DBHelper(); 4 DataSet ds = new DataSet(); 5 6 private string sql = ""; 7 //歌曲的查询语句 8 public string Sql 9 { 10 get { return sql; } 11 set { sql = value; } 12 } 13 public FrmSongList() 14 { 15 InitializeComponent(); 16 } 17 18 private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e) 19 { 20 //第一步判断datagridView有没有选中的行 21 //第二步从实例化SongList类 22 //第三步调取歌曲song类的字段进行赋值(从datagridview中的列赋值); 23 //第四部把从datagridview中获取到的数据添加到播放类里的数组中 24 if (this.dataGridView1.SelectedRows[0]!=null) 25 { 26 SongList song = new SongList(); 27 song.SongName1 = this.dataGridView1.SelectedRows[0].Cells[1].Value.ToString(); 28 song.SongUl1 = this.dataGridView1.SelectedRows[0].Cells[3].Value.ToString(); 29 PalyList.AddSong(song); 30 } 31 32 } 33 34 private void FrmSongList_Load(object sender, EventArgs e) 35 { 36 SqlDataAdapter sda = new SqlDataAdapter(sql,db.Conection); 37 sda.Fill(ds,"songinfo"); 38 dataGridView1.DataSource = ds.Tables["songinfo"]; 39 } 40 41 private void toolStripButton4_Click(object sender, EventArgs e) 42 { 43 this.Close(); 44 } 45 46 private void toolStripButton6_Click(object sender, EventArgs e) 47 { 48 FrmSong frm = new FrmSong(); 49 frm.ShowDialog(); 50 }
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
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 } 17 18 private void toolStripButton1_Click(object sender, EventArgs e) 19 { 20 FrmSinger dd = new FrmSinger(); 21 dd.Show(); 22 }
第六步:拼音点歌
1 public partial class FrmSpeall : Form 2 { 3 private DBOpetion db = new DBOpetion(); 4 private SqlDataAdapter adapter = null; 5 private DataSet ds = new DataSet(); 6 public FrmSpeall() 7 { 8 InitializeComponent(); 9 } 10 [DllImportAttribute("user32.dll")] 11 private static extern bool AnimateWindow(IntPtr hwnd, int dwTime, int dwFlags); 12 private void FrmSpeall_Load(object sender, EventArgs e) 13 { 14 AnimateWindow(this.Handle, 300, FrmMain.AW_SLIDE + FrmMain.AW_VER_POSITIVE); 15 //动态效果可以取消注释 16 //for (int i = 97; i < 123; i++) 17 //{ 18 // for (int j = 0; j < 4; j++) 19 // { 20 // Label label = new Label(); 21 // label.BackColor = Color.Yellow; 22 // label.Font=new System.Drawing.Font("宋体",14.25F,System.Drawing.FontStyle.Regular, 23 // System.Drawing.GraphicsUnit.Point,((byte)(134))); 24 // label.AutoSize = false; 25 // label.Size = new System.Drawing.Size(50, 25); 26 // label.Text = ((char)i).ToString(); 27 // label.TextAlign = ContentAlignment.MiddleCenter; 28 // label.Location = new Point(60 + (i * 90), 60 + (j * 60)); 29 // label.Parent = panel1; 30 // } 31 //} 32 ////for (int i = 97; i < 123; i++) 33 ////{ 34 //// Console.WriteLine((char)i); 35 ////} 36 } 37 38 private void pictureBox1_Click(object sender, EventArgs e) 39 { 40 this.textBox1.Text = this.textBox1.Text + "a"; 41 } 42 43 private void pictureBox2_Click(object sender, EventArgs e) 44 { 45 this.textBox1.Text = this.textBox1.Text + "b"; 46 } 47 48 private void pictureBox3_Click(object sender, EventArgs e) 49 { 50 this.textBox1.Text = this.textBox1.Text + "c"; 51 } 52 53 private void pictureBox4_Click(object sender, EventArgs e) 54 { 55 this.textBox1.Text = this.textBox1.Text + "d"; 56 } 57 58 private void pictureBox5_Click(object sender, EventArgs e) 59 { 60 this.textBox1.Text = this.textBox1.Text + "e"; 61 } 62 63 private void pictureBox6_Click(object sender, EventArgs e) 64 { 65 this.textBox1.Text = this.textBox1.Text + "f"; 66 } 67 68 private void pictureBox7_Click(object sender, EventArgs e) 69 { 70 this.textBox1.Text = this.textBox1.Text + "g"; 71 } 72 73 private void pictureBox8_Click(object sender, EventArgs e) 74 { 75 this.textBox1.Text = this.textBox1.Text + "h"; 76 } 77 78 private void pictureBox9_Click(object sender, EventArgs e) 79 { 80 this.textBox1.Text = this.textBox1.Text + "i"; 81 } 82 83 private void pictureBox10_Click(object sender, EventArgs e) 84 { 85 this.textBox1.Text = this.textBox1.Text + "j"; 86 } 87 88 private void pictureBox11_Click(object sender, EventArgs e) 89 {