asp.net根据计算机MAC地址限定每台机子只能领取一次账号

%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
html xmlns="http://www.w3.org/1999/xhtml" >
head runat="server">
title>无标题页/title>
/head>
body>
form id="form1" runat="server">
div style="text-align: left">
strong>span style="font-size: 14pt">欢迎光临爱智旮旯的博客！/span>br />
/strong>span style="font-size: 10pt; color: #ff0000">注：每台计算机只可以领取一个帐号br />
/span>
asp:Button ID="getNamePass" runat="server" OnClick="getNamePass_Click" Text="领取帐号密码" />nbsp;br />
asp:Label ID="labName" runat="server">/asp:Label>br />
asp:Label ID="labPass" runat="server">/asp:Label>br />
/div>
/form>
/body>
/html>

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.Text.RegularExpressions;
using System.Diagnostics;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
labName.Text = labPass.Text = "";
}
protected void getNamePass_Click(object sender, EventArgs e)
{
//获取客户端的IP地址
string IP = Request.UserHostAddress;
//创建字符串变量
string dirResults = "";
//创建ProcessStartInfo对象表示启动进程时使用的一组值
ProcessStartInfo psi = new ProcessStartInfo();
//创建Process对象使您能够启动和停止本地系统进程
Process proc = new Process();
//设置要启动的应用程序或文档
psi.FileName = "nbtstat";
//设置不从Process.StandardInput流中读取输入
psi.RedirectStandardInput = false;
//设置要输出写入 Process.StandardOutput流
psi.RedirectStandardOutput = true;
//设置启动的应用程序中的一组命令参数
psi.Arguments = "-A " + IP;
//设置从可执行文件创建进程
psi.UseShellExecute = false;
//设置启动进程
proc = Process.Start(psi);
//获取StandardOutput输出流
dirResults = proc.StandardOutput.ReadToEnd();
//设置Process 组件无限期地等待关联进程退出
proc.WaitForExit();
//替换掉StandardOutput输出流中的"/r,/n,/t"
dirResults = dirResults.Replace("\r", "").Replace("\n", "").Replace("\t", "");
//设置正则表达式
Regex reg = new Regex("MAC[ ]{0,}Address[ ]{0,}=[ ]{0,}(?key>((.)*?))MAC", RegexOptions.IgnoreCase | RegexOptions.Compiled);
//向获取的StandardOutput输出流添加"MAC"字符串
dirResults = dirResults + "MAC";
//获取Cookie
HttpCookie oldCookie = Request.Cookies["netCard"];
//获取正则表达式中的匹配项
Match mc = reg.Match(dirResults);
//获取网卡号去除掉“-”符合
string networkCard = mc.Groups["key"].Value.Replace("-", "");
//判断Cookie是否为空
if (oldCookie == null)
{
//判断是否符合正则表达式的要求
if (mc.Success)
{
//显示帐号
labName.Text = "您的帐号为：" + networkCard;
//显示密码
labPass.Text = "您的密码为：1234";
//创建Cookie对象
HttpCookie newCookie = new HttpCookie("netCard");
//设置Cookie的有效时间
newCookie.Expires = DateTime.MaxValue;
//添加Cookie中的值
newCookie.Values.Add("numberCard", networkCard);
//将Cookie添加到Cookie集合中
Response.Cookies.Add(newCookie);
}
else
{
RegisterStartupScript("", "script>alert( '您没有联网！');/script>");
}
}
else
{
//获取Cookie中的网卡号
string numberCard = oldCookie.Values["numberCard"];
//判断Cookie中的网卡号是否和获取到的网卡号一致
if (numberCard.Trim() == networkCard.Trim())
{
RegisterStartupScript("", "script>alert('很抱歉！您的计算机已领取过帐号。')/script>");
}
else
{
//判断是否符合正则表达式的要求
if (mc.Success)
{
//显示帐号
labName.Text = "您的帐号为：" + networkCard;
//显示密码
labPass.Text = "您的密码为：1234";
//修改Cookie中的值
oldCookie.Values.Set("numberCard", networkCard);
//将Cookie添加到Cookie集合中
Response.Cookies.Add(oldCookie);
}
else
{
RegisterStartupScript("", "script>alert( '您没有联网！');/script>");
}
}
}
}
}