find all ip address in a network

Question

I am trying to do this C#. I need to find all ip address that are active in my network and show them in a list. I can ping all available (1...255) ip address in a network. B

Answer 1

    public static void NetPing()
    {            
        Ping pingSender = new Ping();
        foreach (string adr in stringAddressList)
        {
           IPAddress address = IPAddress.Parse(adr);
           PingReply reply = pingSender.Send (address);

           if (reply.Status == IPStatus.Success)
           {
                //Computer is active
           }
           else
           {
                //Computer is down
           }
        }  
    }