MyKTV项目总结

Posted 2020-06-13

                                                        项目名称：KTV点歌系统

                                                                                                                                                           --指导老师原玉明

经过一周多的时间，终于完成的我的这个KTV项目，说实话，做这个项目我收获了不少，难点也非常多，不过经过重重磨难，总算是过来了。不简单呀！

这个项目主要分为前后台。

前台主要实现的功能是：歌星点歌，拼音点歌，字数点歌，

类型选择，金曲排行，一些切歌，重唱，已点歌曲列表，主要是这些功能。

后台主要实现的功能是：增加歌手，增加歌曲，修改歌曲路径，修改歌手图片路径。

首先先看前台：

前台核心类：

SqlHelper类（负责连接数据库）：

 

 //连接字符串
       public static string str = "Data Source=HYJ-PC;Initial Catalog=MyKTV;User ID=sa;pwd=123";

 

KtvHelper类（保存歌曲的目录；保存歌手图片的目录）

 //保存歌曲的目录
       public static string songURL = "";
       //保存歌手图片的目录
 public static string singer_photoURL = "";
FrmByValue类（窗体对象之间的传值）
  public static frmsonglist frmsl;

       public static FrmMain frM;

       public static SelectedSong ss;

Song类（歌曲的信息及实现歌曲状态的一个切换(已播放;未播放;重播;切歌)）：

 //定义一个枚举:歌曲播放状态
   public  enum SongPlayState
    {
        unplayed, played, newplayed, cut

    }
  public  class Song
  {

      public  string SongName
      {
          get { return songName; }
          set { songName = value; }
      }
      public string SongURL
      {
          get { return songURL; }
          set { songURL = value; }
      }

      internal SongPlayState Playseat
      {
          get { return playseat; }
          set { playseat = value; }
      }

      private string songName;//歌曲名称字段
      private string songURL;//歌曲存放路径字段
      //让歌曲的播放状态默认为未播放;
      private SongPlayState playseat = SongPlayState.unplayed;

      //把歌曲状态改为已播放
      public void SetSongPlayed()
      {
          this.playseat = SongPlayState.played;
      }
      //把歌曲状态改为重唱
      public void SetnewSong()
      {
          this.playseat = SongPlayState.newplayed;
      }
      //把歌曲状态改为一切歌
      public void Setcut()
      {
          this.playseat = SongPlayState.cut;
      }

PlayList类（播放歌曲的核心内容，功能(实现播放,切歌,重唱)）：

public class PlayList
    {
       //定义一个数组,默认可以储存50首歌
       public static Song[] songList=new Song[50];//歌曲播放列表数组
       public static int songIndex;//当前播放的歌曲在数组的索引



       #region 添加播放歌曲
       public static bool AddSong(Song song)
       {
           bool happy = false;
           for (int i = 0; i < songList.Length; i++)
           {
               if (songList[i] == null)
               {
                   songList[i] = song;

                   happy = true;
                   break;
               }
           }
           return happy;

       } 
       #endregion
    
       #region 当前播放的歌曲名称
         public static string PlayingSongName()
        { 
            string songName = ""; // 歌曲名称
             if(songList.Length>songIndex)
             {
                 if (songList[songIndex] != null)
                 {
                     songName = songList[songIndex].SongName;
                 }
             }
           

            return songName;
        } 
       #endregion

       #region 获取当前播放的歌曲
         public static Song GetPlayingSong()
         {
             if(songIndex<songList.Length)
             {
                 if (songList[songIndex] != null)
                 {
                     return songList[songIndex];
                 }
                 else
                 {
                     return null;
                 }
             }
             return null;
         } 
         #endregion

       #region 下一首要播放的歌曲名称
         public static string NextSongName()
         {
             string songName = ""; // 歌曲名称
             if(songIndex<songList.Length)
             {
                 if (songList.Length > songIndex + 1)
                 {
                     if (songList[songIndex + 1] != null)
                     {
                         songName = songList[songIndex + 1].SongName;
                     }
                   
              
             }
           
           }
             return songName;
         } 
         #endregion

       #region 切歌：
         public static void CutSong()
         {
             //代表切歌的位置
             int i = songIndex;  
            
             if (songList[i]!=null)
             {
                 songList[i].Setcut();
             }
             while (songList[i] != null)
             {
                 songList[i] = songList[i + 1];
                 i++;

                 // 如果到达数组最后一个元素，就将最后一个元素指向空
                 if (i == songList.Length)
                 {
                     songList[i] = null;
                 }
             }
             if (songList[0] != null)
             {
                 songList[0].Playseat = SongPlayState.played;
             }
         }
 
    #endregion

       #region 重放当前歌曲
         public static void PlayAgain()
         {
             if (songList[songIndex] != null)
             {
                 songList[songIndex].SetnewSong();
             }
         } 
         #endregion

       #region 播放下一首
         public static void MoveOn()
         {
             if(songIndex<songList.Length)
             {
                 if (songList[songIndex] != null && songList[songIndex].Playseat == SongPlayState.newplayed)
                 {
                     songList[songIndex].SetSongPlayed();
                 }
                 else
                 {
                     songIndex++;
                 }
             }
            
         }        
         #endregion
  
   }

实现窗体拖动的代码（找到对应事件双击）：

#region 让窗体实现拖动
        public Point mouseOffset;        //记录鼠标指针的坐标        
        public bool isMouseDown = false; //记录鼠标按键是否按下   
        private void FrmMain_MouseDown(object sender, MouseEventArgs e)
        {
            int xOffset;
            int yOffset;
            if (e.Button == MouseButtons.Left)
            {
                xOffset = -e.X - SystemInformation.FrameBorderSize.Width;
                yOffset = -e.Y - SystemInformation.CaptionHeight - SystemInformation.FrameBorderSize.Height;
                mouseOffset = new Point(xOffset, yOffset);
                isMouseDown = true;
            }
        }

        private void FrmMain_MouseMove(object sender, MouseEventArgs e)
        {
            if (isMouseDown)
            {
                Point mousePos = Control.MousePosition;
                mousePos.Offset(mouseOffset.X + 5, mouseOffset.Y + 30);
                Location = mousePos;
            }
        }

        private void FrmMain_MouseUp(object sender, MouseEventArgs e)
        {
            // 修改鼠标状态isMouseDown的值      
            // 确保只有鼠标左键按下并移动时，才移动窗体       
            if (e.Button == MouseButtons.Left)
            {
                isMouseDown = false;
            }
        } 
        #endregion

主界面：（FrmMain）

 

 //当前播放的歌曲
        public Song songname;

        #region 让窗体实现拖动
        public Point mouseOffset;        //记录鼠标指针的坐标        
        public bool isMouseDown = false; //记录鼠标按键是否按下   
        private void FrmMain_MouseDown(object sender, MouseEventArgs e)
        {
            int xOffset;
            int yOffset;
            if (e.Button == MouseButtons.Left)
            {
                xOffset = -e.X - SystemInformation.FrameBorderSize.Width;
                yOffset = -e.Y - SystemInformation.CaptionHeight - SystemInformation.FrameBorderSize.Height;
                mouseOffset = new Point(xOffset, yOffset);
                isMouseDown = true;
            }
        }

        private void FrmMain_MouseMove(object sender, MouseEventArgs e)
        {
            if (isMouseDown)
            {
                Point mousePos = Control.MousePosition;
                mousePos.Offset(mouseOffset.X + 5, mouseOffset.Y + 30);
                Location = mousePos;
            }
        }

        private void FrmMain_MouseUp(object sender, MouseEventArgs e)
        {
            // 修改鼠标状态isMouseDown的值      
            // 确保只有鼠标左键按下并移动时，才移动窗体       
            if (e.Button == MouseButtons.Left)
            {
                isMouseDown = false;
            }
        } 
        #endregion

       // 点击退出按钮触发的事件
        private void btnexit_Click(object sender, EventArgs e)
        {
            Application.Exit();  
        } 

       // Login事件
        private void FrmMain_Load(object sender, EventArgs e)
        {
            
           
            //把整个窗体对象赋给FrmByValue的静态frM对象
            FrmByValue.frM = this;
            //运行窗体时启动定时器
            this.tilist_played.Start();

            //调用查询返回路径的方法,传入SQL语句
            // 歌曲路径
            string sql = "select resource_path from Resource_path where resource_id=1";
            KtvHelper.songURL = song_path(sql);
            // 歌手图片路径
            string sql1 = "select resource_path from Resource_path where resource_id=2";
            KtvHelper.singer_photoURL = song_path(sql1);


        } 
        
        /// <summary>
        /// 查询返回路径的方法
        /// </summary>
        /// <param name="sql">传入sql语句</param>
        /// <returns>根据传入的sql语句返回不同的路径(1.resource_id=1歌曲路径:resource_id=2歌手图片路径)</returns>
        private string song_path(string sql)
        {
            SqlConnection con = new SqlConnection(SqlHelper.str);
            SqlCommand cmd = new SqlCommand(sql, con);
            string path = "";
            try
            {
                con.Open();
                SqlDataReader dr = cmd.ExecuteReader();

                if (dr != null)
                {
                    if (dr.HasRows)
                    {
                        while (dr.Read())
                        {
                            path = dr["resource_path"].ToString();
                        }

                    }
                }
            }
            catch (Exception)
            {


                MessageBox.Show("网络异常!");
            }
            finally
            {
                con.Close();
            }
            return path;
        }  
    
      //点击显示播放触发的事件
        private void btnshow_Click(object sender, EventArgs e)
        {
        
      
         if (this.Width == 567)
         {
             this.Width = this.Width + 208;
             btnshow.Text = "隐 藏 播 放";
         }
         else if (this.Width > 567)
         {
             this.Width = 567;
             btnshow.Text = "显 示 播 放";
         }
          
        } 

       //已点歌曲窗体
        private void btnopen_Click(object sender, EventArgs e)
        {
            SelectedSong frm = new SelectedSong();
            this.Hide();
            frm.Show();
        }

 
  
        // 点击拼音点歌触发的事件
        private void btnspell_Click(object sender, EventArgs e)
        {
            frmbySongname frm = new frmbySongname();
            this.Hide();
            frm.Show();
            
        } 
     
      //点击字数点歌触发的事件
        private void btnnum_Click(object sender, EventArgs e)
        {
            frmbyziSong frm = new frmbyziSong();
            this.Hide();
            frm.Show();
        } 

        //点击类型点歌触发的事件
        private void btntype_Click(object sender, EventArgs e)
        {
            frmbyTypesong frm = new frmbyTypesong();
            this.Hide();
            frm.Show();
        }

        //定时扫描歌曲列表，显示当前播放歌曲的名称
        public void ShowPlayingSongName()
        {
            txtopen.Text = PlayList.PlayingSongName();
            txtnext.Text = PlayList.NextSongName();
        }

       //播放歌曲的方法
        public void PlaySong()
        {
            // 获取当前要播放的歌曲
            this.songname = PlayList.GetPlayingSong();
          
          
            if (songname != null)
            {
                #region 播放时显示歌曲图片
                string name = songname.SongName;
                string sql = "select singer_id from song_info where song_name =‘" + name + "‘ ";
                SqlConnection con = new SqlConnection(SqlHelper.str);
                con.Open();
                SqlCommand cmd = new SqlCommand(sql, con);
                int singerid = Convert.ToInt32(cmd.ExecuteScalar());
                con.Close();
                string sql1 = "select singer_photo from singer_info where singer_id=" + singerid + "";
                SqlConnection con1 = new SqlConnection(SqlHelper.str);
                con1.Open();
                SqlCommand cmd1 = new SqlCommand(sql1, con1);
                string singer_photo = cmd1.ExecuteScalar().ToString();
                con1.Close();
                plist.Image = Image.FromFile(KtvHelper.singer_photoURL + singer_photo); 
                #endregion
                // 将当前歌曲播放状态设为已播放
                this.songname.SetSongPlayed();
                
                // 得到当前播放歌曲的路径
                Playerlist.URL = KtvHelper.songURL + songname.SongURL;
               
            }
        } 
     
        //计时器控件的Tick事件
        private void tilist_played_Tick(object sender, EventArgs e)
        {
             ShowPlayingSongName();
            if(this.songname==null)
            {
                this.PlaySong();
            }
            if (this.Playerlist.playState == WMPLib.WMPPlayState.wmppsStopped)
            {
                this.songname = null;
                PlayList.MoveOn();
            }
            if(this.songname!=null&&this.songname.Playseat==SongPlayState.cut)
            {
                this.Playerlist.URL = "";
                this.songname = null;
            
            }
            if (this.songname != null && this.songname.Playseat == SongPlayState.newplayed)
            {
                this.PlaySong();
            
            }
   
        }

        //点击切歌触发的事件
        private void btnnextsong_Click(object sender, EventArgs e)
        {
            if (this.songname != null)
            {
                PlayList.CutSong();
                
            }
            else 
            {
                MessageBox.Show("亲!你还没有添加歌曲");
                
            }
           
        }

        //点击重唱触发的事件
        private void btnnew_Click(object sender, EventArgs e)
        {
            if (this.songname != null)
            {
                PlayList.PlayAgain();
            }
            else
            {
                MessageBox.Show("亲!你还没有添加歌曲");

            }
           
        }

        //点击金曲排行触发的时间
        private void btnorderby_Click(object sender, EventArgs e)
        {
            frmsonglist frm = new frmsonglist();
            frm.ph = 1;
            this.Hide();
            frm.Show();

        }
        //歌星点歌
        private void btnswan_Click_1(object sender, EventArgs e)
        {
            Frmbyswangetsong frm = new Frmbyswangetsong();
            frm.Show();
            this.Hide();
        }

        //当鼠标进入控件可见状态是触发的事件
        private void btnswan_MouseEnter(object sender, EventArgs e)
        {
            ToolTip tp = new ToolTip();
            tp.ShowAlways = true;
            tp.SetToolTip(btnswan,"歌星点歌");

        }

        private void btnspell_MouseEnter(object sender, EventArgs e)
        {
            ToolTip tp = new ToolTip();
            tp.ShowAlways = true;
            tp.SetToolTip(btnspell, "拼音点歌");
        }

        private void btnnum_MouseEnter(object sender, EventArgs e)
        {
            ToolTip tp = new ToolTip();
            tp.ShowAlways = true;
            tp.SetToolTip(btnnum, "字数点歌");
        }

        private void btntype_MouseEnter(object sender, EventArgs e)
        {
             ToolTip tp = new ToolTip();
            tp.ShowAlways = true;
            tp.SetToolTip(btntype, "类型选择");
            
        }

        private void btnorderby_MouseEnter(object sender, EventArgs e)
        {
            ToolTip tp = new ToolTip();
            tp.ShowAlways = true;
            tp.SetToolTip(btnorderby, "金曲排行");
        }

        private void btnnew_MouseEnter(object sender, EventArgs e)
        {
            ToolTip tp = new ToolTip();
            tp.ShowAlways = true;
            tp.SetToolTip(btnnew, "重唱"); 
        }

        private void btnnextsong_MouseEnter(object sender, EventArgs e)
        {
            ToolTip tp = new ToolTip();
            tp.ShowAlways = true;
            tp.SetToolTip(btnnextsong, "切歌"); 
        }

        private void btnopen_MouseEnter(object sender, EventArgs e)
        {
            ToolTip tp = new ToolTip();
            tp.ShowAlways = true;
            tp.SetToolTip(btnopen, "已点"); 
        }

        private void btnfw_MouseEnter(object sender, EventArgs e)
        {
            ToolTip tp = new ToolTip();
            tp.ShowAlways = true;
            tp.SetToolTip(btnfw, "服务"); 
        }

        private void btnexit_MouseEnter(object sender, EventArgs e)
        {

            ToolTip tp = new ToolTip();
            tp.ShowAlways = true;
            tp.SetToolTip(btnexit, "退出"); 
        }

        private void btnfw_Click(object sender, EventArgs e)
        {
            MessageBox.Show("正在呼叫服务...");
        }

歌星点歌（Frmbyswangetsong）：

 //图片索引
        public int index=0;
        public int index_singer = 0;

       //Load事件
        private void Frmbyswangetsong_Load(object sender, EventArgs e)
        {
            //在显示当前窗体时,让第二个lvlisttwo和第三个lvlistthere控件不显示
            lvlisttwo.Visible = false;
            lvlistthere.Visible = false;


            #region 给第一个listview绑定数据
            //给listview1绑定数据和图片
            ListViewItem lv = new ListViewItem("组合", 0);
            lv.Tag = "组合";
            ListViewItem lv1 = new ListViewItem("女歌手", 1);
            lv1.Tag = "女";
            ListViewItem lv2 = new ListViewItem("男歌手", 2);
            lv2.Tag = "男";
            lvlistone.Items.Add(lv);
            lvlistone.Items.Add(lv1);
            lvlistone.Items.Add(lv2); 
            #endregion

        } 



       //点击lvlistone中项时触发的事件
        private void lvlistone_Click(object sender, EventArgs e)
        {
            //如果没有选中lvlistone控件中的任何一项是不会显示第二个窗体
            //让第二个出现的lvlisttwo和lvlistone显示在同一个位置
            lvlisttwo.Location = lvlistone.Location;
            //如果选中一项,就把第二个llvlisttwo显示出来
            //让第二个lvlisttwo显示
            lvlisttwo.Visible = true;
            if (lvlistone.SelectedItems[0] != null)
            {
                //给第二个listview控件动态绑定数据的方法
                lvlisttwoadd();
               
            }
           
        }

       //给第二个listview控件动态绑定数据的方法lvlisttwoadd();
        private void lvlisttwoadd()
        {
            SqlConnection con = new SqlConnection(SqlHelper.str);
            string sql = "select * from singer_type";
            SqlCommand cmd = new SqlCommand(sql, con);
            try
            {
                con.Open();
                SqlDataReader dr = cmd.ExecuteReader();
                if (dr != null)
                {
                    if (dr.HasRows)
                    {
                        while (dr.Read())
                        {
                            string singertype_group = dr["singertype_name"].ToString();
                            int id = Convert.ToInt32(dr["singertype_id"]);
                            ListViewItem lv = new ListViewItem();
                            lv.ImageIndex = index++;
                            lv.Text = singertype_group;
                            lv.Tag= id;
                           // MessageBox.Show(lvlisttwo.Tag.ToString());
                            lvlisttwo.Items.Add(lv);
                        }
                    }
                }
            }
            catch (Exception)
            {

                MessageBox.Show("网络异常!");
            }
            finally
            {
                con.Close();
            }
        }  
   
     // 03点击lvlisttwo中项时触发的事件
        private void lvlisttwo_Click(object sender, EventArgs e)
        {

            lvlistthere.Items.Clear();
            //如果没有选中lvlisttwo控件中的任何一项是不会显示第三个窗体
            //如果选中一项,就把第二个llvlistthere显示出来
            if (lvlisttwo.SelectedItems[0] != null)
            {
                lvlisttwo.Visible = false;
                //让第三个出现的lvlistthere和lvlistone显示在同一个位置
                lvlistthere.Location = lvlistone.Location;
                //让第三个lvlistthere显示
                lvlistthere.Visible = true;
                //获取用户点击第一个listview是男歌手还是女歌手或者是组合
                string singer_group = lvlistone.SelectedItems[0].Tag.ToString();
                //获取用户点击点击第二个listview是哪个地区的id
                int cityid = Convert.ToInt32(lvlisttwo.SelectedItems[0].Tag);        
                SqlConnection con = new SqlConnection(SqlHelper.str);
                string sql = "select singer_name,singer_photo from singer_info where singer_sex =‘" + singer_group + "‘ and singertype_id="+cityid+" ";
                SqlCommand cmd = new SqlCommand(sql,con);
                try
                {
                    con.Open();
                  SqlDataReader dr=  cmd.ExecuteReader();
                    if(dr!=null)
                    {
                    if(dr.HasRows)
                    {
                        while (dr.Read())
                        {
                            //获取到歌手姓名和歌手图片路径
                            string singer_name = dr["singer_name"].ToString();
                            string singer_photo_url = dr["singer_photo"].ToString();
                            //并接路径
                            string URL = KtvHelper.singer_photoURL + singer_photo_url;
                            imgsingerinfo .Images.Add(Image.FromFile(URL));
                            ListViewItem lv = new ListViewItem();
                            lv.Text = singer_name;
                            lv.ImageIndex =index_singer++;
                            lvlistthere.Items.Add(lv);

                        }
                    }
                    }

                }
                catch (Exception)
                {

                    MessageBox.Show("网络异常!");
                }
                finally 
                {
                    con.Close();
                }
                
           
              }

        }
           
       //点击按钮主界面触发的事件
        private void btnmain_Click(object sender, EventArgs e)
        {
            FrmByValue.frM.Show();
            this.Close();
            
        } 

       // 点击返回触发的事件
        private