asp.net获取客户端的MAC(网卡地址)

来源：互联网发布：手机淘宝联盟链接转换编辑：程序博客网时间：2024/05/16 01:53

[DllImport("Iphlpapi.dll")]

      private static extern int SendARP(Int32 dest,Int32 host,ref Int64 mac,ref Int32 length);
      [DllImport("Ws2_32.dll")]
      private static extern Int32 inet_addr(string ip);

      private void Page_Load(object sender, System.EventArgs e)
      {
           try
           {
                string userip=Request.UserHostAddress;
                string strClientIP = Request.UserHostAddress.ToString().Trim();
                Int32 ldest = inet_addr(strClientIP); //目的地的ip
                Int64 macinfo = new Int64();
                Int32 len = 6;
                int res = SendARP(ldest,0, ref macinfo, ref len);
                string mac_src=macinfo.ToString("X");
                if(mac_src == "0")
                {
                    if (userip == "127.0.0.1")
                    {
                        Response.Write("正在访问Localhost!");
                    }
                    else
                    {
                        Response.Write("欢迎来自IP为" + userip + "的朋友！" + "<br>");
                    }
                     return;
                }

                while(mac_src.Length<12)
                {
                    mac_src = mac_src.Insert(0,"0");
                }

                string mac_dest="";

                for(int i=0;i<11;i++)
                {
                     if (0 == (i % 2))
                     {
                          if ( i == 10 )
                          {
                                mac_dest = mac_dest.Insert(0,mac_src.Substring(i,2));
                          }
                          else
                          {
                                mac_dest ="-" + mac_dest.Insert(0,mac_src.Substring(i,2));
                          }
                     }
                }

                Response.Write ("欢迎来自IP为"+userip+ "<br>" + ",MAC地址为"+mac_dest+"的朋友！"

                 +   "<br>");
           }
           catch(Exception err)
           {
                Response.Write(err.Message);
           }
      }

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