平凡的KTV后台，不平凡的KTV数据

    之前就是说过“一个项目有很多重要的步骤以及功能”，那我们现在就来看看对于KTV项目来说；后台是处于什么样的重要作用！

    首先就得了解KTV后台的一些功能了：

    1.歌曲管理 、歌手管理 、设置资源路径

    2.新增歌手、歌手查询、新增歌曲、歌曲查询、更改歌曲路径以及退出点歌系统

   

    一.后台登录界面

  

 01.判断登录

 }
        //登陆
        private void btnlogin_Click(object sender, EventArgs e)
        {
            SqlConnection con = new SqlConnection(DBHelp.str);
            string sql = "select count(1) from admin_info where admin_name='" + txtuser.Text + "' and admin_pwd='" + txtpwd.Text + "'";
            SqlCommand cmd = new SqlCommand(sql, con);
            try
            {
                con.Open();
                int count = Convert.ToInt32(cmd.ExecuteScalar());
                if (count > 0)
                {
                    this.Hide();
                    FrmMain frm = new FrmMain();
                    frm.Show();
                }
            }
            catch (Exception)
            {

                MessageBox.Show("失败");
            }
            finally
            {
                con.Close();

            }

        }

    二.主界面窗体

  

    01.新增歌手

   

   

     001.添加歌手

  //添加
        public void SongInfoAdd()
        { 
           string name = txtname.Text;//歌手姓名
            string type = "";//类别
            if (ramale.Checked)
            {
                type = "男";
            }
            else if (rafemale.Checked)
            {
                type = "女";
            }
            else if (raguoup.Checked)
            {
                type = "组合";
            }
            int id = Convert.ToInt32(cbotype.SelectedValue);//类型            
            string description = txtdescrp.Text;//描述
            SqlConnection con = new SqlConnection(DBHelp.str);
            string sql = "insert into singer_info values('" + name + "'," + id + ",'" + type + "','" + fileName + "','" + description + "')";
            SqlCommand cmd = new SqlCommand(sql,con);
            try
            {
                con.Open();
                int count = cmd.ExecuteNonQuery();
                if (count > 0)
                {
                    File.Copy(fullName, Commod.DBsongurl + "\" + fileName, true);
                    MessageBox.Show("歌手添加成功");
                }
                else
                {
                    MessageBox.Show("歌手添加失败");
                }
            }
            catch (Exception)
            {

                MessageBox.Show("歌手加载失败"); ;
            }
            finally
            {
                con.Close();//关闭
            }
        }

    002.添加图片

  string fileName = "";
        string fullName = "";

        private void btnView_Click(object sender, EventArgs e)
        {

            //浏览
            if (this.ofdlist.ShowDialog() == DialogResult.OK)
            {

                fileName = this.ofdlist.SafeFileName; // 文件名
                fullName = this.ofdlist.FileName;
                picphoto.Image = Image.FromFile(fullName);
                txtdescrp.Text = fullName;
            }
        }

   02.查询歌手

 

 

001.按歌手条件查询

 private void btnselect_Click(object sender, EventArgs e)
        {
            //判定用歌手名或歌手类型查询
            if (txtname.Text != ""&&cbotype.Text=="请选择")
            {
                //歌手名
                string sql = @"select singer_name,singertype_name,singer_gender,singer_description
                                from singer_type,singer_info
                    where singer_type.singertype_id=singer_info.singertype_id 
                    and singer_name like '%" + txtname.Text + "%'";
                Selectsong(sql);

            }
            else if (txtname.Text=="")
            {
                //类型
                string sql = @"select singer_name,singertype_name,singer_gender,singer_description
                                from singer_type,singer_info
                    where singer_type.singertype_id=singer_info.singertype_id 
                    and singertype_name like '%" + cbotype.Text + "%'";
                Selectsong(sql);
            }
            else
            {
                string sql = @"select singer_name,singertype_name,singer_gender,singer_description
                                from singer_type,singer_info
                    where singer_type.singertype_id=singer_info.singertype_id 
                    and singer_name like '%" + txtname.Text + "%' and singertype_name like '" + cbotype.Text +"'";
                Selectsong(sql);
            }
           
        }

 002.给下拉框赋值

 //下拉框
        public void Singerselect()
        {
            string str = DBHelp.str;
            //连接数据库
            SqlConnection con = new SqlConnection(str);
            string sql = "select singertype_id,singertype_name from singer_type";
            //数据集和数据库连接
            SqlDataAdapter da = new SqlDataAdapter(sql, con);
            DataSet ds = new DataSet();
            try
            {
                da.Fill(ds);
                //绑定数据源
                DataTable dt = ds.Tables[0];
                DataRow dr = dt.NewRow();
                //给该行赋值
                dr[0] = -1;
                dr[1] = "请选择";
                dt.Rows.InsertAt(dr, 0);
                cbotype.DataSource = ds.Tables[0];
                //下拉框显示值
                cbotype.DisplayMember = "singertype_name";
                //下拉框隐藏值
                cbotype.ValueMember = "singertype_id";
            }
            catch (Exception)
            {
                MessageBox.Show("加载失败!");
            }
            finally
            {
                con.Close();
            }
        }

   003.右键修改和删除并及时刷新

  

  代码：

 //修改
        private void tsupdate_Click(object sender, EventArgs e)
        {
            string uname = dgvlist.SelectedRows[0].Cells[0].Value.ToString();
            this.Hide();
            frmAddSinger frm = new frmAddSinger();
            frm.Text = "修改歌手信息";
            frm.uname = uname;
            frm.Show();
        }
        //删除
        private void tsdelete_Click(object sender, EventArgs e)
        {
            string names = dgvlist.SelectedRows[0].Cells[0].Value.ToString();
            string sql = "delete singer_info where singer_name='" + names + "'";
            Selectsong(sql);
            string sql1 = @"select singer_name,singertype_name,singer_gender,singer_description
                            from singer_type,singer_info
                        where singer_type.singertype_id=singer_info.singertype_id";
            Selectsong(sql1);
        }

   修改歌手

  

  修改代码：

 //修改
        public void Update()
        {
            int songid = Convert.ToInt32(cbotype.SelectedValue);
            int num = txtname.Text.Length;
            SqlConnection con = new SqlConnection(DBHelp.str);
            //singer_id, singer_name, singertype_id, singer_gender, singer_photo_url, singer_description
            string sql = @"update singer_info set singer_name='" + txtname.Text + "',singer_gender='" + ch + "',singer_photo_url='" + fileName +
                         "',singertype_id=" + type + ",singer_description='"+txtdescrp.Text+"' where singer_name ='" + uname + "'";
            SqlCommand cmd = new SqlCommand(sql, con);
            try
            {
                con.Open();
                int count = cmd.ExecuteNonQuery();
                if (count > 0)
                {
                    MessageBox.Show("修改成功");
                }
            }
            catch (Exception)
            {

                MessageBox.Show("加载失败"); ;
            }
            finally
            {
                con.Close();
            }
        }

  修改与添加的关键判断代码：

  private void btnadd_Click(object sender, EventArgs e)
        {
            if (this.Text=="修改歌手信息")
            {
                Update();//修改
            }
            else
            {
                SongInfoAdd();//保存功能
            }
            
        }

  private void frmAddSinger_Load(object sender, EventArgs e)
        {
            Singerselect(); //默认查询代码
            Commod.DBsongurl=OldLoadWays();
            if (this.Text=="修改歌手信息")
            {
                btnadd.Text = "修改";
                //MessageBox.Show(uname);
                Load_information();
            }
            else
            {
                this.Text = "编辑歌手信息";
                btnadd.Text = "保存";
            }
        }

 03.新增歌曲

 

  001.查询代码

  //查询
        private void btnsearch_Click(object sender, EventArgs e)
        {
            //歌手

            FrmSelectSinger frm = new FrmSelectSinger();
            frm.Show();
            this.Close();
        } 


   //歌手添加 
            string singer = dgvlist.SelectedRows[0].Cells[0].Value.ToString();
           
            FrmAdd frm = new FrmAdd();
            frm.name = singer;
            frm.Show();
            this.Close();

 002.自动形成缩写代码

public class Song_ab
    {   
        private static int[] pyValue = new int[]
    {
    -20319,-20317,-20304,-20295,-20292,-20283,-20265,-20257,-20242,-20230,-20051,-20036,
    -20032,-20026,-20002,-19990,-19986,-19982,-19976,-19805,-19784,-19775,-19774,-19763,
    -19756,-19751,-19746,-19741,-19739,-19728,-19725,-19715,-19540,-19531,-19525,-19515,
    -19500,-19484,-19479,-19467,-19289,-19288,-19281,-19275,-19270,-19263,-19261,-19249,
    -19243,-19242,-19238,-19235,-19227,-19224,-19218,-19212,-19038,-19023,-19018,-19006,
    -19003,-18996,-18977,-18961,-18952,-18783,-18774,-18773,-18763,-18756,-18741,-18735,
    -18731,-18722,-18710,-18697,-18696,-18526,-18518,-18501,-18490,-18478,-18463,-18448,
    -18447,-18446,-18239,-18237,-18231,-18220,-18211,-18201,-18184,-18183, -18181,-18012,
    -17997,-17988,-17970,-17964,-17961,-17950,-17947,-17931,-17928,-17922,-17759,-17752,
    -17733,-17730,-17721,-17703,-17701,-17697,-17692,-17683,-17676,-17496,-17487,-17482,
    -17468,-17454,-17433,-17427,-17417,-17202,-17185,-16983,-16970,-16942,-16915,-16733,
    -16708,-16706,-16689,-16664,-16657,-16647,-16474,-16470,-16465,-16459,-16452,-16448,
    -16433,-16429,-16427,-16423,-16419,-16412,-16407,-16403,-16401,-16393,-16220,-16216,
    -16212,-16205,-16202,-16187,-16180,-16171,-16169,-16158,-16155,-15959,-15958,-15944,
    -15933,-15920,-15915,-15903,-15889,-15878,-15707,-15701,-15681,-15667,-15661,-15659,
    -15652,-15640,-15631,-15625,-15454,-15448,-15436,-15435,-15419,-15416,-15408,-15394,
    -15385,-15377,-15375,-15369,-15363,-15362,-15183,-15180,-15165,-15158,-15153,-15150,
    -15149,-15144,-15143,-15141,-15140,-15139,-15128,-15121,-15119,-15117,-15110,-15109,
    -14941,-14937,-14933,-14930,-14929,-14928,-14926,-14922,-14921,-14914,-14908,-14902,
    -14894,-14889,-14882,-14873,-14871,-14857,-14678,-14674,-14670,-14668,-14663,-14654,
    -14645,-14630,-14594,-14429,-14407,-14399,-14384,-14379,-14368,-14355,-14353,-14345,
    -14170,-14159,-14151,-14149,-14145,-14140,-14137,-14135,-14125,-14123,-14122,-14112,
    -14109,-14099,-14097,-14094,-14092,-14090,-14087,-14083,-13917,-13914,-13910,-13907,
    -13906,-13905,-13896,-13894,-13878,-13870,-13859,-13847,-13831,-13658,-13611,-13601,
    -13406,-13404,-13400,-13398,-13395,-13391,-13387,-13383,-13367,-13359,-13356,-13343,
    -13340,-13329,-13326,-13318,-13147,-13138,-13120,-13107,-13096,-13095,-13091,-13076,
    -13068,-13063,-13060,-12888,-12875,-12871,-12860,-12858,-12852,-12849,-12838,-12831,
    -12829,-12812,-12802,-12607,-12597,-12594,-12585,-12556,-12359,-12346,-12320,-12300,
    -12120,-12099,-12089,-12074,-12067,-12058,-12039,-11867,-11861,-11847,-11831,-11798,
    -11781,-11604,-11589,-11536,-11358,-11340,-11339,-11324,-11303,-11097,-11077,-11067,
    -11055,-11052,-11045,-11041,-11038,-11024,-11020,-11019,-11018,-11014,-10838,-10832,
    -10815,-10800,-10790,-10780,-10764,-10587,-10544,-10533,-10519,-10331,-10329,-10328,
    -10322,-10315,-10309,-10307,-10296,-10281,-10274,-10270,-10262,-10260,-10256,-10254
    };
        private static string[] pyName = new string[]
    {
    "A","Ai","An","Ang","Ao","Ba","Bai","Ban","Bang","Bao","Bei","Ben",
    "Beng","Bi","Bian","Biao","Bie","Bin","Bing","Bo","Bu","Ba","Cai","Can",
    "Cang","Cao","Ce","Ceng","Cha","Chai","Chan","Chang","Chao","Che","Chen","Cheng",
    "Chi","Chong","Chou","Chu","Chuai","Chuan","Chuang","Chui","Chun","Chuo","Ci","Cong",
    "Cou","Cu","Cuan","Cui","Cun","Cuo","Da","Dai","Dan","Dang","Dao","De",
    "Deng","Di","Dian","Diao","Die","Ding","Diu","Dong","Dou","Du","Duan","Dui",
    "Dun","Duo","E","En","Er","Fa","Fan","Fang","Fei","Fen","Feng","Fo",
    "Fou","Fu","Ga","Gai","Gan","Gang","Gao","Ge","Gei","Gen","Geng","Gong",
    "Gou","Gu","Gua","Guai","Guan","Guang","Gui","Gun","Guo","Ha","Hai","Han",
    "Hang","Hao","He","Hei","Hen","Heng","Hong","Hou","Hu","Hua","Huai","Huan",
    "Huang","Hui","Hun","Huo","Ji","Jia","Jian","Jiang","Jiao","Jie","Jin","Jing",
    "Jiong","Jiu","Ju","Juan","Jue","Jun","Ka","Kai","Kan","Kang","Kao","Ke",
    "Ken","Keng","Kong","Kou","Ku","Kua","Kuai","Kuan","Kuang","Kui","Kun","Kuo",
    "La","Lai","Lan","Lang","Lao","Le","Lei","Leng","Li","Lia","Lian","Liang",
    "Liao","Lie","Lin","Ling","Liu","Long","Lou","Lu","Lv","Luan","Lue","Lun",
    "Luo","Ma","Mai","Man","Mang","Mao","Me","Mei","Men","Meng","Mi","Mian",
    "Miao","Mie","Min","Ming","Miu","Mo","Mou","Mu","Na","Nai","Nan","Nang",
    "Nao","Ne","Nei","Nen","Neng","Ni","Nian","Niang","Niao","Nie","Nin","Ning",
    "Niu","Nong","Nu","Nv","Nuan","Nue","Nuo","O","Ou","Pa","Pai","Pan",
    "Pang","Pao","Pei","Pen","Peng","Pi","Pian","Piao","Pie","Pin","Ping","Po",
    "Pu","Qi","Qia","Qian","Qiang","Qiao","Qie","Qin","Qing","Qiong","Qiu","Qu",
    "Quan","Que","Qun","Ran","Rang","Rao","Re","Ren","Reng","Ri","Rong","Rou",
    "Ru","Ruan","Rui","Run","Ruo","Sa","Sai","San","Sang","Sao","Se","Sen",
    "Seng","Sha","Shai","Shan","Shang","Shao","She","Shen","Sheng","Shi","Shou","Shu",
    "Shua","Shuai","Shuan","Shuang","Shui","Shun","Shuo","Si","Song","Sou","Su","Suan",
    "Sui","Sun","Suo","Ta","Tai","Tan","Tang","Tao","Te","Teng","Ti","Tian",
    "Tiao","Tie","Ting","Tong","Tou","Tu","Tuan","Tui","Tun","Tuo","Wa","Wai",
    "Wan","Wang","Wei","Wen","Weng","Wo","Wu","Xi","Xia","Xian","Xiang","Xiao",
    "Xie","Xin","Xing","Xiong","Xiu","Xu","Xuan","Xue","Xun","Ya","Yan","Yang",
    "Yao","Ye","Yi","Yin","Ying","Yo","Yong","You","Yu","Yuan","Yue","Yun",
    "Za", "Zai","Zan","Zang","Zao","Ze","Zei","Zen","Zeng","Zha","Zhai","Zhan",
    "Zhang","Zhao","Zhe","Zhen","Zheng","Zhi","Zhong","Zhou","Zhu","Zhua","Zhuai","Zhuan",
    "Zhuang","Zhui","Zhun","Zhuo","Zi","Zong","Zou","Zu","Zuan","Zui","Zun","Zuo"
    };

        /// <summary>
        /// 把汉字转换成拼音(全拼)
        /// </summary>
        /// <param name="hzString">汉字字符串</param>
        /// <returns>转换后的拼音(全拼)字符串</returns>
        public static string CharacterConvertString(string hzString)
        {
            // 匹配中文字符
            Regex regex = new Regex("^[u4e00-u9fa5]$");
            byte[] array = new byte[2];
            string pyString = "";
            int chrAsc = 0;
            int i1 = 0;
            int i2 = 0;
            char[] noWChar = hzString.ToCharArray();

            for (int j = 0; j < noWChar.Length; j++)
            {
                // 中文字符
                if (regex.IsMatch(noWChar[j].ToString()))
                {
                    array = System.Text.Encoding.Default.GetBytes(noWChar[j].ToString());
                    i1 = (short)(array[0]);
                    i2 = (short)(array[1]);
                    chrAsc = i1 * 256 + i2 - 65536;
                    if (chrAsc > 0 && chrAsc < 160)
                    {
                        pyString += noWChar[j];
                    }
                    else
                    {
                        // 修正部分文字
                        if (chrAsc == -9254)  // 修正“圳”字
                        {
                            pyString += "Zhen";
                        }
                        else
                        {
                            for (int i = (pyValue.Length - 1); i >= 0; i--)
                            {
                                if (pyValue[i] <= chrAsc)
                                {
                                    pyString += pyName[i];
                                    break;
                                }
                            }
                        }
                    }
                }
                // 非中文字符

                else
                {
                    pyString += noWChar[j].ToString();
                }
            }
            return pyString;
        }

        /// <summary>
        /// 只转换每个汉字首字母（大写）
        /// </summary>
        /// <param name="strText"></param>
        /// <returns></returns>
        public static string GetChineseSpell(string strText)
        {
            int len = strText.Length;
            string myStr = "";
            for (int i = 0; i < len; i++)
            {
                myStr += getSpell(strText.Substring(i, 1));
            }
            return myStr;
        }

        /// <summary>
        /// 获得第一个汉字的首字母（大写）；
        /// </summary>
        /// <param name="cnChar"></param>
        /// <returns></returns>
        public static string getSpell(string cnChar)
        {
            byte[] arrCN = Encoding.Default.GetBytes(cnChar);
            if (arrCN.Length > 1)
            {
                int area = (short)arrCN[0];
                int pos = (short)arrCN[1];
                int code = (area << 8) + pos;
                int[] areacode = { 45217, 45253, 45761, 46318, 46826, 47010, 47297, 47614, 48119, 48119, 49062, 49324, 49896, 50371, 50614, 50622, 50906, 51387, 51446, 52218, 52698, 52698, 52698, 52980, 53689, 54481 };
                for (int i = 0; i < 26; i++)
                {
                    int max = 55290;
                    if (i != 25) max = areacode[i + 1];
                    if (areacode[i] <= code && code < max)
                    {
                        return Encoding.Default.GetString(new byte[] { (byte)(65 + i) });
                    }
                }
                return "*";
            }
            else return cnChar;
        }

    }

 //歌曲文本框事件
        private void txtname_TextChanged(object sender, EventArgs e)
        {
            txtsong.Text=Song_ab.GetChineseSpell(txtname.Text);
        }

003.保存代码

 //保存
        public void Save()
        {
            string names = txtname.Text;//歌曲个数
            int num = names.Length;
            int id = SelectidByName();//歌手id
            int sid = Convert.ToInt32(cbotype.SelectedValue);//歌曲类型
            SqlConnection con = new SqlConnection(DBHelp.str);
            string sql = "insert into song_info values('" + txtname.Text + "','" + txtsong.Text + "'," + num + "," + sid + "," + id + ",'" + txtsongname.Text + "',default)";
            SqlCommand cmd = new SqlCommand(sql, con);
            try
            {
                con.Open();
                int count = cmd.ExecuteNonQuery();
                if (count > 0)
                {
                    File.Copy(fullName, Commod.DBphotourl + "\" + this.txtsongname.Text, true);
                    MessageBox.Show("保存成功");
                }
                else
                {
                    MessageBox.Show("保存失败");
                }
            }
            catch (Exception)
            {

                MessageBox.Show("信息未完善"); ;
            }
            finally
            {
                con.Close();
            }
        }

04.查询歌曲

001.默认查询全部

 

 002.按地区查询

003.歌曲模糊查询

004.歌曲和类型同时查询

005.判断查询的选择

 private void btnselect_Click(object sender, EventArgs e)
        {
            //判定用歌曲名或类型查询
            if (txtname.Text != ""&&cbotype.Text=="请选择")
            {
                //歌曲名
                string sql = @"select song_name,song_play_count,songtype_name
                            from song_type,song_info
                        where song_type.songtype_id=song_info.songtype_id and song_name like '%" + txtname.Text + "%'";
                Selectsong(sql);
            }
            else if (txtname.Text=="")
            {
                //歌曲类型
                string sql = @"select song_name,song_play_count,songtype_name
                            from song_type,song_info
                        where song_type.songtype_id=song_info.songtype_id and songtype_name like '%" + cbotype.Text + "%'";
                Selectsong(sql);
            }
            else
            {
                //歌曲名
                string sql = @"select song_name,song_play_count,songtype_name
                            from song_type,song_info
                        where song_type.songtype_id=song_info.songtype_id and song_name like '%" + txtname.Text +
                           "%' and songtype_name like '%" + cbotype.Text + "%'";
                Selectsong(sql);
            }        
        }
        //修改
        private void tsupdate_Click(object sender, EventArgs e)
        {
            string gname = dgvlist.SelectedRows[0].Cells[0].Value.ToString();
            this.Hide();
            FrmAdd frm = new FrmAdd();
            frm.Text = "修改歌曲信息";
            frm.gname = gname;
            frm.Show();
        }
        //删除
        private void tsdelete_Click(object sender, EventArgs e)
        {
            string names = dgvlist.SelectedRows[0].Cells[0].Value.ToString();
            string sql = "delete song_info where song_name='"+names+"'";
            Selectsong(sql);
            string sql1 = @"select song_name,song_play_count,songtype_name
                            from song_type,song_info
                        where song_type.songtype_id=song_info.songtype_id";
            Selectsong(sql1);
        }

 05.右键修改窗体以及删除歌曲套上及时刷新数据

   //修改
        public void Update()
        {
            int songid=Convert.ToInt32(cbotype.SelectedValue);
            int num=txtname.Text.Length;
            SqlConnection con = new SqlConnection(DBHelp.str);
            //song_id, song_name, song_ab, song_word_count, songtype_id, singer_id, song_url, song_play_count
            string sql = @"update song_info set song_name='" + txtname.Text + "',song_ab='" + txtsong.Text +
                     "',singer_id=" + fid + ",songtype_id=" + songid + ",song_url='"+txtsongname.Text+
                     "',song_word_count=" + num + " where song_name='" + gname + "'";
            SqlCommand cmd = new SqlCommand(sql,con);
            try
            {
                con.Open();
                int count = cmd.ExecuteNonQuery();
                if (count > 0)
                {
                    File.Copy(fullName, Commod.DBphotourl + "\" + this.txtsongname.Text, true);
                    MessageBox.Show("修改成功");
                }
            }
            catch (Exception)
            {

                MessageBox.Show("加载失败"); ;
            }
            finally
            {
                con.Close();
            }
        }

  06.设置资源路径

001.歌曲路径

0001. 浏览

  private void btnview_Click(object sender, EventArgs e)
        {
            //浏览
            if (this.fbdlist.ShowDialog() == DialogResult.OK)
            {
                this.txtnewurl.Text = this.fbdlist.SelectedPath;
            }
        }

 0002.保存

   //更新歌曲路径
        private void btnsave_Click(object sender, EventArgs e)
        {
             if (txtnewurl.Text!="")
            {
                if (Commod.DBphotourl!="")
                {
                // 将原路径下的文件复制到新路径下                            
                string[] files = Directory.GetFiles(Commod.DBphotourl);                           
                string fileName = ""; // 文件名（不含路径）
                string dest = "";   // 目标文件名（含路径）
                foreach (string source in files)
                {
                    fileName = Path.GetFileName(source);
                    dest = this.txtnewurl.Text.Trim() + "\" + fileName;
                    File.Copy(source, dest,true);
                }
                }

                SqlConnection con = new SqlConnection(DBHelp.str);
                string sql = "update resource_path set resource_path = '" + txtnewurl.Text + "\" + "' where resource_id=2";
                con.Open();
                SqlCommand cmd = new SqlCommand(sql, con);
                int count = cmd.ExecuteNonQuery();
                if (count > 0)
                {
                    //// 删除原目录中的文件
                    if (Commod.DBphotourl != "")
                    {
                        Directory.Delete(Commod.DBphotourl, true);
                    }
                    MessageBox.Show("更新歌曲路径成功");
                }
                con.Close();    
            }
            else
            {
                MessageBox.Show("新路径空了!");
            }
        
            
        }

003.原路径以及数据

 004.设置新路径

005.修改成功的路径以及数据

  003.原路径以及数据被删除

 

   

       好了，MyKTV项目总算是完成了，后台主要就管理ktv项目的数据，所以它的作用也就不言而喻了，如果觉得不足可以给我建议，我相信我们都会不完美；

就像有人说的那样：“这个项目有很多人都在写，都要被写烂了”!但是我觉得学习的东西不在于多而在于精，如果你们能多认真点去浏览，我想你会学到很多你所不知道的东西的。