asp.net如何获取客户端网卡mac地址

//添加组件System.Management

using System.Management;

using System.Runtime.InteropServices;

[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)

{

try

{

string userip = Request.UserHostAddress;

Int32 ldest = inet_addr(userip); //目的地的ip

Int32 lhost = inet_addr(""); //本地服务器的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")

userinfo.Text = "正在访问Localhost!";

else

userinfo.Text = "欢迎来自IP为" + userip + "的朋友！";

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))

mac_dest = mac_dest.Insert(0, mac_src.Substring(i, 2));

}

userinfo.Text = "欢迎来自IP为" + userip + ",MAC地址为" + mac_dest + "的朋友！";

}

catch (Exception err)

{

Response.Write(err.Message);

}

}