C# 在线考试系统（含数据库）

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Drawing.Imaging;
using System.Drawing;
public partial class Image : System.Web.UI.Page
{
    protected void Page_Load（object sender EventArgs e）
    {
        string tmp = RndNum（Convert.ToInt16（6））;
        Session[“verify“] = tmp;
        ValidateCode（tmp）;
    }
    private void ValidateCode（string VNum）
    {
        Bitmap Img = null;
        Graphics g = null;
        MemoryStream ms = null;
        int gheight = VNum.Length * 9;
        Img = new Bitmap（gheight 18）;

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2011-06-07 16:13  ExamOnLine\
     目录           0  2011-06-07 16:13  ExamOnLine\App_Code\
     文件        3009  2007-12-02 08:34  ExamOnLine\App_Code\baseClass.cs
     文件         604  2007-12-02 08:34  ExamOnLine\App_Code\MessageBox.cs
     文件       43653  2007-12-06 11:34  ExamOnLine\App_Code\projClass.cs
     目录           0  2019-06-23 01:18  ExamOnLine\App_Data\
     文件     2097152  2010-08-15 17:10  ExamOnLine\App_Data\db_ExamOnline.ldf
     文件     2097152  2010-08-15 17:10  ExamOnLine\App_Data\db_ExamOnline.mdf
     文件       22284  2019-06-23 01:15  ExamOnLine\App_Data\db_ExamOnline.sql
     文件        1529  2010-08-11 09:44  ExamOnLine\ExamOnLine.sln
     文件        9216  2010-08-11 13:27  ExamOnLine\ExamOnLine.suo
     目录           0  2011-06-07 16:13  ExamOnLine\Image\
     文件          46  2007-11-26 09:10  ExamOnLine\Image\back_01.gif
     文件       14570  2007-11-26 09:10  ExamOnLine\Image\back_03.gif
     文件        1691  2007-11-26 09:10  ExamOnLine\Image\back_13.gif
     文件         709  2007-11-27 08:26  ExamOnLine\Image\bg.gif
     文件        1636  2007-11-26 09:18  ExamOnLine\Image\emame_03.gif
     文件       31675  2007-11-26 09:14  ExamOnLine\Image\exame_02.gif
     文件        1637  2007-11-26 09:14  ExamOnLine\Image\exame_05.gif
     文件        1637  2007-11-26 09:17  ExamOnLine\Image\kemu_03.gif
     文件       25434  2007-11-26 09:00  ExamOnLine\Image\login.gif
     文件        1635  2007-11-26 09:19  ExamOnLine\Image\rule_03.gif
     文件         439  2007-12-02 09:23  ExamOnLine\Image.aspx
     文件        1800  2007-12-02 09:24  ExamOnLine\Image.aspx.cs
     文件        4878  2007-12-04 09:44  ExamOnLine\Login.aspx
     文件        2489  2011-06-13 11:31  ExamOnLine\Login.aspx.cs
     文件         151  2007-12-02 08:38  ExamOnLine\Mystyle.css
     目录           0  2011-06-07 16:13  ExamOnLine\UserControls\
     文件         328  2007-12-02 08:43  ExamOnLine\UserControls\Fooder.ascx
     文件         427  2007-12-02 08:43  ExamOnLine\UserControls\Fooder.ascx.cs
     文件         331  2007-12-02 08:43  ExamOnLine\UserControls\Header1.ascx
............此处省略66个文件信息