這裡只做簡單示範過程，請根據您的實際情況作適當修改！
另外我的部落格只做自己參考查詢方便用，請各位大神不要沒事噴我，知道您的技術高，我是新手正在努力學習當中，謝謝！！！！
下面開始吧：
首先寫一個簡單的前台代碼：
<%@ 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>無標題頁</title></head><body> <form id="form1" runat="server"> <div style="text-align: left"> <strong><span style="font-size: 14pt">歡迎光臨愛智旮旯的部落格！</span><br /> </strong><span style="font-size: 10pt; color: #ff0000">註：每台電腦只可以領取一個帳號<br /> </span> <asp:Button ID="getNamePass" runat="server" OnClick="getNamePass_Click" Text="領取帳號密碼" /> <br /> <asp:Label ID="labName" runat="server"></asp:Label><br /> <asp:Label ID="labPass" runat="server"></asp:Label><br /> </div> </form></body></html>
再來寫一個後台代碼，備忘已經說的比較清楚，這裡不多說了！
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) { //擷取用戶端的IP地址 string IP = Request.UserHostAddress; //建立字串變數 string dirResults = ""; //建立ProcessStartInfo對象表示啟動進程時使用的一組值 ProcessStartInfo psi = new ProcessStartInfo(); //建立Process對象使您能夠啟動和停止本地系統進程 Process proc = new Process(); //設定要啟動的應用程式或文檔 psi.FileName = "nbtstat"; //設定不從Process.StandardInput流中讀取輸入 psi.RedirectStandardInput = false; //設定要輸出寫入 Process.StandardOutput流 psi.RedirectStandardOutput = true; //設定啟動的應用程式中的一組命令參數 psi.Arguments = "-A " + IP; //設定從可執行檔建立進程 psi.UseShellExecute = false; //設定啟動進程 proc = Process.Start(psi); //擷取StandardOutput輸出資料流 dirResults = proc.StandardOutput.ReadToEnd(); //設定Process 組件無限期地等待關聯進程退出 proc.WaitForExit(); //替換掉StandardOutput輸出資料流中的"/r,/n,/t" dirResults = dirResults.Replace("\r", "").Replace("\n", "").Replace("\t", ""); //設定Regex Regex reg = new Regex("MAC[ ]{0,}Address[ ]{0,}=[ ]{0,}(?<key>((.)*?))MAC", RegexOptions.IgnoreCase | RegexOptions.Compiled); //向擷取的StandardOutput輸出資料流添加"MAC"字串 dirResults = dirResults + "MAC"; //擷取Cookie HttpCookie oldCookie = Request.Cookies["netCard"]; //擷取Regex中的匹配項 Match mc = reg.Match(dirResults); //擷取網卡號去除掉“-”符合 string networkCard = mc.Groups["key"].Value.Replace("-", ""); //判斷Cookie是否為空白 if (oldCookie == null) { //判斷是否符合Regex的要求 if (mc.Success) { //顯示帳號 labName.Text = "您的帳號為：" + networkCard; //顯示密碼 labPass.Text = "您的密碼為：1234"; //建立Cookie對象 HttpCookie newCookie = new HttpCookie("netCard"); //設定Cookie的有效時間 newCookie.Expires = DateTime.MaxValue; //添加Cookie中的值 newCookie.Values.Add("numberCard", networkCard); //將Cookie添加到Cookie集合中 Response.Cookies.Add(newCookie); } else { RegisterStartupScript("", "<script>alert( '您沒有連網！');</script>"); } } else { //擷取Cookie中的網卡號 string numberCard = oldCookie.Values["numberCard"]; //判斷Cookie中的網卡號是否和擷取到的網卡號一致 if (numberCard.Trim() == networkCard.Trim()) { RegisterStartupScript("", "<script>alert('很抱歉！您的電腦已領取過帳號。')</script>"); } else { //判斷是否符合Regex的要求 if (mc.Success) { //顯示帳號 labName.Text = "您的帳號為：" + networkCard; //顯示密碼 labPass.Text = "您的密碼為：1234"; //修改Cookie中的值 oldCookie.Values.Set("numberCard", networkCard); //將Cookie添加到Cookie集合中 Response.Cookies.Add(oldCookie); } else { RegisterStartupScript("", "<script>alert( '您沒有連網！');</script>"); } } } }}
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