using?System;
using?System.Collections.Generic;
using?System.Data.SqlClient;
using?System.Linq;
using?System.Text;
using?System.Threading.Tasks;

namespace?MyKtv
{
????class?DBHelper
????{
????????private?static?string?str?=?“Data?Source=.;Initial?Catalog=MyKtv;User?ID=sa;Password=123“;
????????private?static?SqlConnection?connection;
??????

????????public?static?SqlConnection?getConnection（）
????????{
????????????connection?=?new?SqlConnection（str）;
????????????return?connection;
????????}
????????public?static?void?closeConnection（SqlConnection?connection）
????????{
????????????connection.Close（）;
????????}
????}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

????..A..H.?????73728??2020-09-15?08:56??MyKtvClient\.vs\MyKtvClient\v16\.suo

????..A..H.?????64512??2020-09-14?09:02??MyKtvClient\.vs\MyKtvServer\v16\.suo

????..A..H.?????23552??2020-09-14?09:47??MyKtvClient\MyKtvClient\.vs\MyKtvClient\v16\.suo

?????文件????????187??2020-09-08?08:58??MyKtvClient\MyKtvClient\App.config

?????文件??????53760??2020-09-14?09:46??MyKtvClient\MyKtvClient\bin\Debug\AxInterop.WMPLib.dll

?????文件?????330752??2020-09-14?09:46??MyKtvClient\MyKtvClient\bin\Debug\Interop.WMPLib.dll

?????文件?????789504??2020-09-14?14:38??MyKtvClient\MyKtvClient\bin\Debug\MyKtvClient.exe

?????文件????????187??2020-09-08?08:58??MyKtvClient\MyKtvClient\bin\Debug\MyKtvClient.exe.config

?????文件?????122368??2020-09-14?14:38??MyKtvClient\MyKtvClient\bin\Debug\MyKtvClient.pdb

?????文件????????655??2020-09-08?13:52??MyKtvClient\MyKtvClient\DBHelper.cs

?????文件???????5838??2020-09-12?08:06??MyKtvClient\MyKtvClient\FrmMain.cs

?????文件??????13799??2020-09-11?09:21??MyKtvClient\MyKtvClient\FrmMain.Designer.cs

?????文件?????838171??2020-09-11?09:21??MyKtvClient\MyKtvClient\FrmMain.resx

?????文件???????5948??2020-09-11?09:32??MyKtvClient\MyKtvClient\FrmOrderBySinger.cs

?????文件??????13014??2020-09-10?13:19??MyKtvClient\MyKtvClient\FrmOrderBySinger.Designer.cs

?????文件?????265160??2020-09-10?13:19??MyKtvClient\MyKtvClient\FrmOrderBySinger.resx

?????文件???????3885??2020-09-10?16:38??MyKtvClient\MyKtvClient\FrmOrderBySongName.cs

?????文件??????11085??2020-09-10?13:19??MyKtvClient\MyKtvClient\FrmOrderBySongName.Designer.cs

?????文件??????10233??2020-09-10?13:19??MyKtvClient\MyKtvClient\FrmOrderBySongName.resx

?????文件???????3793??2020-09-11?09:25??MyKtvClient\MyKtvClient\FrmOrderBySongType.cs

?????文件???????6915??2020-09-10?14:48??MyKtvClient\MyKtvClient\FrmOrderBySongType.Designer.cs

?????文件???????9492??2020-09-10?14:48??MyKtvClient\MyKtvClient\FrmOrderBySongType.resx

?????文件???????2736??2020-09-14?14:36??MyKtvClient\MyKtvClient\FrmOrderByWordCount.cs

?????文件???????6920??2020-09-14?14:36??MyKtvClient\MyKtvClient\FrmOrderByWordCount.Designer.cs

?????文件???????9492??2020-09-14?14:36??MyKtvClient\MyKtvClient\FrmOrderByWordCount.resx

?????文件???????3839??2020-09-10?16:18??MyKtvClient\MyKtvClient\FrmOrderedSongList.cs

?????文件??????10388??2020-09-10?13:21??MyKtvClient\MyKtvClient\FrmOrderedSongList.Designer.cs

?????文件??????13569??2020-09-10?13:21??MyKtvClient\MyKtvClient\FrmOrderedSongList.resx

?????文件???????1870??2020-09-10?13:35??MyKtvClient\MyKtvClient\FrmPlay.cs

?????文件???????2716??2020-09-09?13:53??MyKtvClient\MyKtvClient\FrmPlay.Designer.cs

............此處省略162個文件信息