C# 考试管理系统（附教师、学生、管理员三个角色入口）

考试管理系统 首先要 附加Ctgu 这个数据库，然后 将 dbhelper.cs中的 连接串 改成本机的，即可测试了

管理员账号：admin 密码 admin1

教师账号：t002 密码 12345

学生账号：

using System;
using System.Collections.Generic;
using System.Text;
using System.Data.SqlClient;

namespace MySchool
{
    // 存放数据库连接字符串和数据库连接对象
    class DBHelper
    {
        // 数据库连接字符串        
        public static string connectionString = “server=localhost;database=Ctgu;uid=sa;pwd=123“;
        // 数据库连接对象
        public static SqlConnection connection = new SqlConnection（connectionString）;
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2013-12-07 17:32  OlineTest\
     文件     6291456  2013-12-07 18:33  OlineTest\Ctgu.mdf
     文件     1048576  2013-12-07 18:33  OlineTest\Ctgu_log.ldf
     目录           0  2013-04-12 17:30  OlineTest\test_online\
     目录           0  2013-04-12 17:30  OlineTest\test_online\Ctgu\
     目录           0  2013-04-12 17:30  OlineTest\test_online\Ctgu\Source\
     目录           0  2013-04-12 17:32  OlineTest\test_online\Ctgu\Source\MySchool\
     文件       48128  2013-03-31 15:02  OlineTest\test_online\Ctgu\Source\MySchool（冲突_ZHW_2013-03-31 15-02-22）.suo
     文件         930  2013-04-06 13:33  OlineTest\test_online\Ctgu\Source\MySchool.sln
     文件       85504  2013-12-07 18:32  OlineTest\test_online\Ctgu\Source\MySchool.suo
     目录           0  2013-04-12 17:30  OlineTest\test_online\Ctgu\Source\MySchool\Admin\
     文件        4118  2013-04-07 21:45  OlineTest\test_online\Ctgu\Source\MySchool\Admin\AdminForm.cs
     文件        7737  2013-04-07 21:25  OlineTest\test_online\Ctgu\Source\MySchool\Admin\AdminForm.Designer.cs
     文件      211425  2013-04-07 21:25  OlineTest\test_online\Ctgu\Source\MySchool\Admin\AdminForm.resx
     文件         144  2013-04-12 17:32  OlineTest\test_online\Ctgu\Source\MySchool\app.config
     目录           0  2013-04-12 17:30  OlineTest\test_online\Ctgu\Source\MySchool\bin\
     目录           0  2013-04-12 17:32  OlineTest\test_online\Ctgu\Source\MySchool\bin\Debug\
     文件      120320  2013-03-24 15:33  OlineTest\test_online\Ctgu\Source\MySchool\bin\Debug\MySchool（冲突_ZHW_2013-03-24 15-33-46）.pdb
     文件     2076672  2013-03-31 17:14  OlineTest\test_online\Ctgu\Source\MySchool\bin\Debug\MySchool（冲突_ZHW_2013-03-31 17-14-46）.exe
     文件     2355200  2013-12-07 18:28  OlineTest\test_online\Ctgu\Source\MySchool\bin\Debug\MySchool.exe
     文件         144  2013-04-12 17:32  OlineTest\test_online\Ctgu\Source\MySchool\bin\Debug\MySchool.exe.config
     文件      265728  2013-12-07 18:28  OlineTest\test_online\Ctgu\Source\MySchool\bin\Debug\MySchool.pdb
     文件       11592  2013-12-07 18:31  OlineTest\test_online\Ctgu\Source\MySchool\bin\Debug\MySchool.vshost.exe
     文件         144  2013-04-12 17:32  OlineTest\test_online\Ctgu\Source\MySchool\bin\Debug\MySchool.vshost.exe.config
     文件         490  2010-03-17 22:39  OlineTest\test_online\Ctgu\Source\MySchool\bin\Debug\MySchool.vshost.exe.manifest
     目录           0  2013-04-12 17:30  OlineTest\test_online\Ctgu\Source\MySchool\bin\Release\
     文件       10882  2013-04-12 17:32  OlineTest\test_online\Ctgu\Source\MySchool\Ctgu_Test_Online.csproj
     文件         451  2011-04-24 12:27  OlineTest\test_online\Ctgu\Source\MySchool\Ctgu_Test_Online.csproj.user
     文件         456  2013-12-07 18:28  OlineTest\test_online\Ctgu\Source\MySchool\DBHelper.cs
     文件      136606  2013-03-30 19:21  OlineTest\test_online\Ctgu\Source\MySchool\Icon （2）.ico
     文件       60161  2013-03-30 19:14  OlineTest\test_online\Ctgu\Source\MySchool\Icon.png
............此处省略115个文件信息