Using C # to write a method for obtaining remote IP,MAC

If you want to get a remote address, you need to use sendarp this function to implement. The specific code is as follows:
[DllImport ("Iphlpapi.dll")]
private static unsafe extern int Sendarp (Int32 dest,int32 host,ref IntPtr mac,ref IntPtr length);
[DllImport ("Ws2_32.dll")]
private static extern Int32 inet_addr (string IP);

Int32 ldest= inet_addr ("157.60.68.163");/IP of destination
Int32 lhost= inet_addr ("157.60.68.33");//Local IP

Try
{
Byte[] Macinfo=new byte[6];
Int32 length=6;

IntPtr mac=new IntPtr (macinfo[0]);
IntPtr len=new IntPtr (6);
int Ii=sendarp (ldest,lhost, ref mac, ref Len);

Console.WriteLine ("Mac Add:" +mac);
Console.WriteLine ("Length:" +len);


}
catch (Exception err)
{
Console.WriteLine (ERR);
}