using?System;
using?System.Data;
using?System.Data.SqlClient;

namespace?MyQQ
{
????//數(shù)據(jù)庫(kù)操作類
????class?DataOperator
????{
????????//數(shù)據(jù)庫(kù)連接字符串
????????private?static?string?connString?=?@“Data?Source=XIAOKE;Database=db_MyQQ;User?ID=sa;Pwd=;“;
????????//數(shù)據(jù)庫(kù)連接對(duì)象
????????public?static?SqlConnection?connection?=?new?SqlConnection（connString）;

????????///

????????///執(zhí)行SQL語(yǔ)句，并返回結(jié)果中的第一行第一列
????????///

????????///要執(zhí)行的SQL語(yǔ)句
????????///結(jié)果中的第一行第一列
????????public?int?ExecSQL（string?sql）
????????{
????????????SqlCommand?command?=?new?SqlCommand（sql?connection）;//指定要執(zhí)行的SQL語(yǔ)句
????????????if?（connection.State?==?ConnectionState.Closed）//如果當(dāng)前數(shù)據(jù)連接處于關(guān)閉狀態(tài)
????????????????connection.Open（）;??//打開(kāi)數(shù)據(jù)庫(kù)連接
????????????int?num?=?

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件?????111104??2017-05-10?08:49??MyQQ\.vs\MyQQ\v14\.suo

?????文件????????161??2017-05-10?08:49??MyQQ\app.config

?????文件???????9220??2017-05-10?08:49??MyQQ\bin\Debug\msg.wav

?????文件????5961728??2017-05-10?08:49??MyQQ\bin\Debug\MyQQ.exe

?????文件????????161??2017-05-10?08:49??MyQQ\bin\Debug\MyQQ.exe.config

?????文件?????118272??2017-05-10?08:49??MyQQ\bin\Debug\MyQQ.pdb

?????文件??????22688??2017-05-10?08:49??MyQQ\bin\Debug\MyQQ.vshost.exe

?????文件????????161??2017-05-10?08:49??MyQQ\bin\Debug\MyQQ.vshost.exe.config

?????文件????????490??2017-05-10?08:49??MyQQ\bin\Debug\MyQQ.vshost.exe.manifest

?????文件???????6947??2017-05-10?08:49??MyQQ\bin\Debug\system.wav

?????文件????3145728??2017-05-10?08:49??MyQQ\Database\db_MyQQ.mdf

?????文件??????48032??2017-05-10?08:49??MyQQ\Database\db_MyQQ.sql

?????文件????3538944??2017-05-10?08:49??MyQQ\Database\db_MyQQ_log.ldf

?????文件???????2915??2017-05-10?08:49??MyQQ\DataOperator.cs

?????文件??????11476??2017-05-10?08:49??MyQQ\Frm_AddFriend.cs

?????文件??????36544??2017-05-10?08:49??MyQQ\Frm_AddFriend.Designer.cs

?????文件??????13585??2017-05-10?08:49??MyQQ\Frm_AddFriend.resx

?????文件???????6619??2017-05-10?08:49??MyQQ\Frm_Chat.cs

?????文件??????15823??2017-05-10?08:49??MyQQ\Frm_Chat.Designer.cs

?????文件????1428465??2017-05-10?08:49??MyQQ\Frm_Chat.resx

?????文件???????7075??2017-05-10?08:49??MyQQ\Frm_EditInfo.cs

?????文件??????35265??2017-05-10?08:49??MyQQ\Frm_EditInfo.Designer.cs

?????文件????1421303??2017-05-10?08:49??MyQQ\Frm_EditInfo.resx

?????文件???????1771??2017-05-10?08:49??MyQQ\Frm_Head.cs

?????文件??????11239??2017-05-10?08:49??MyQQ\Frm_Head.Designer.cs

?????文件????1422443??2017-05-10?08:49??MyQQ\Frm_Head.resx

?????文件???????6816??2017-05-10?08:49??MyQQ\Frm_Login.cs

?????文件???????8028??2017-05-10?08:49??MyQQ\Frm_Login.Designer.cs

?????文件???????5817??2017-05-10?08:49??MyQQ\Frm_Login.resx

?????文件??????19533??2017-05-10?08:49??MyQQ\Frm_Main.cs

............此處省略271個(gè)文件信息