前台代码
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication2.WebForm1" %>
<!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></title>
</head>
<body>
<form id="form1" runat="server">
<div style="text-align: left">
<strong><span style="font-size: 14pt"></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" /> <br />
<asp:Label ID="labName" runat="server"></asp:Label><br />
<asp:Label ID="labPass" runat="server"></asp:Label><br /> </div>
</form>
</body>
</html>
后台代码
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;
namespace WebApplication2
{
public partial class WebForm1 : 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>");
}
}
}
}
} }