用C#取得远程IP地址,MAC地址的方法

经常需要获得远程的地址，需要用sendarp这个函数来实现。具体不多说，直接给代码,具体的代码如下：

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");//目的地的ip 
Int32 lhost= inet_addr("157.60.68.33");//本地的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); 
}