平凡的KTV後臺，不平凡的KTV數據

之前就是說過“一個項目有很多重要的步驟以及功能”，那我們現在就來看看對於KTV項目來說；後臺是處於什麼樣的重要作用！首先就得瞭解KTV後臺的一些功能了： 1.歌曲管理、歌手管理、設置資源路徑 2.新增歌手、歌手查詢、新增歌曲、歌曲查詢、更改歌曲路徑以及退出點歌系統一.後臺登錄界面 01.判斷

之前就是說過“一個項目有很多重要的步驟以及功能”，那我們現在就來看看對於KTV項目來說；後臺是處於什麼樣的重要作用！

首先就得瞭解KTV後臺的一些功能了：

1.歌曲管理、歌手管理、設置資源路徑

2.新增歌手、歌手查詢、新增歌曲、歌曲查詢、更改歌曲路徑以及退出點歌系統

一.後臺登錄界面

01.判斷登錄

 }
        //登陸
        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("失敗");
            }
            finally
            {
                con.Close();

            }

        }

二.主界面窗體

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 = "";//類別
            if (ramale.Checked)
            {
                type = "男";
            }
            else if (rafemale.Checked)
            {
                type = "女";
            }
            else if (raguoup.Checked)
            {
                type = "組合";
            }
            int id = Convert.ToInt32(cbotype.SelectedValue);//類型            
            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("歌手添加失敗");
                }
            }
            catch (Exception)
            {

                MessageBox.Show("歌手載入失敗"); ;
            }
            finally
            {
                con.Close();//關閉
            }
        }

002.添加圖片

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

        private void btnView_Click(object sender, EventArgs e)
        {

            //瀏覽
            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.查詢歌手

001.按歌手條件查詢

 private void btnselect_Click(object sender, EventArgs e)
        {
            //判定用歌手名或歌手類型查詢
            if (txtname.Text != ""&&cbotype.Text=="請選擇")
            {
                //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=="")
            {
                //類型
                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.給下拉框賦值

 //下拉框
        public void Singerselect()
        {
            string str = DBHelp.str;
            //連接資料庫
            SqlConnection con = new SqlConnection(str);
            string sql = "select singertype_id,singertype_name from singer_type";
            //數據集和資料庫連接
            SqlDataAdapter da = new SqlDataAdapter(sql, con);
            DataSet ds = new DataSet();
            try
            {
                da.Fill(ds);
                //綁定數據源
                DataTable dt = ds.Tables[0];
                DataRow dr = dt.NewRow();
                //給該行賦值
                dr[0] = -1;
                dr[1] = "請選擇";
                dt.Rows.InsertAt(dr, 0);
                cbotype.DataSource = ds.Tables[0];
                //下拉框顯示值
                cbotype.DisplayMember = "singertype_name";
                //下拉框隱藏值
                cbotype.ValueMember = "singertype_id";
            }
            catch (Exception)
            {
                MessageBox.Show("載入失敗!");
            }
            finally
            {
                con.Close();
            }
        }

003.右鍵修改和刪除並及時刷新

代碼：

 //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();
        }
        //刪除
        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

修改代碼：

 //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("載入失敗"); ;
            }
            finally
            {
                con.Close();
            }
        }

修改與添加的關鍵判斷代碼：

  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(); //預設查詢代碼
            Commod.DBsongurl=OldLoadWays();
            if (this.Text=="修改歌手信息")
            {
                btnadd.Text = "修改";
                //MessageBox.Show(uname);
                Load_information();
            }
            else
            {
                this.Text = "編輯歌手信息";
                btnadd.Text = "保存";
            }
        }

03.新增歌曲

001.查詢代碼

  //查詢
        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.自動形成縮寫代碼

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