当前文件： VerifyColorTwistCode/Default.aspx.cs[1K，2009-6-12 11:57:57]，打开代码结构图

		            
 1using System;
 2using System.IO;
 3using System.Configuration;
 4using System.Collections;
 5using System.Web;
 6using System.Web.Security;
 7using System.Web.UI;
 8using System.Web.UI.WebControls;
 9using System.Web.UI.WebControls.WebParts;
10using System.Web.UI.HtmlControls;
11
12namespace VerifyColorCode_51aspx
13...{
14    //该源码下载自www.51aspx.com(５１ａｓｐｘ．ｃｏｍ)
15    //51aspx实现彩色验证码
16    public partial class _Default : System.Web.UI.Page
17    ...{
18        protected void Page_Load(object sender, EventArgs e)
19        ...{
20            if (!Page.IsPostBack)
21            ...{
22                Response.Cookies.Add(new HttpCookie("CheckCode", ""));
23            }
24        }
25
26        protected void Button1_Click(object sender, EventArgs e)
27        ...{
28            if (Request.Cookies["CheckCode"] == null)
29            ...{
30                Label1.Text = "您的浏览器设置已被禁用 Cookies，您必须设置浏览器允许使用 Cookies 选项后才能使用本系统。";
31                Label1.Visible = true;
32                return;
33            }
34
35            if (String.Compare(Request.Cookies["CheckCode"].Value, TextBox1.Text.ToString().Trim(), true) != 0)
36            ...{
37                Label1.Text = "<font color=red>对不起，验证码错误！</font>";
38                Label1.Visible = true;
39                return;
40            }
41            else
42            ...{
43                Label1.Text = "<font color=green>恭喜，验证码输入正确！</font>";
44                Label1.Visible = true;
45            }
46
47        }
48    }
49}
50