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   源码介绍

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Runtime.InteropServices;

namespace FileUpLoadTestWeb
{
    public partial class FileUpload : System.Web.UI.Page
    {
        [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);

        protected void Page_Load(object sender, EventArgs e)
        {
            //string mac = GetClientMac();
            Response.Redirect("BreakPointUpLoad.aspx?UserID=100&Param=path|子文件夹&MUC_Code=code&FriendKey=12&AttributeType=23");
        }

        /// <summary>
        /// 读取客户端MAC地址
        /// </summary>
        /// <returns></returns>
        private string GetClientMac()
        {
            string mac = string.Empty;
            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(userip);
                    return mac;
                }

                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));
                        }
                    }
                }

                mac = mac_dest;
            }
            catch
            {

            }
            return mac;
        }
    }
}