System.Collections.ArrayList.Contains C# (CSharp) Method

        public virtual bool Contains(Object item)
        {
            if (item == null)
            {
                for (int i = 0; i < _size; i++)
                    if (_items[i] == null)
                        return true;
                return false;
            }
            else
            {
                for (int i = 0; i < _size; i++)
                    if ((_items[i] != null) && (_items[i].Equals(item)))
                        return true;
                return false;
            }
        }

        public Listener( int port )
        {
            m_ThisPort = port;
            m_Disposed = false;
            m_Accepted = new Queue();
            m_OnAccept = new AsyncCallback( OnAccept );

            m_Listener = Bind( IPAddress.Any, port );

            try
            {
                IPHostEntry iphe = Dns.Resolve( Dns.GetHostName() );

                ArrayList list = new ArrayList();
                list.Add( IPAddress.Loopback );

                Console.WriteLine( "Address: {0}:{1}", IPAddress.Loopback, port );

                IPAddress[] ips = iphe.AddressList;

                for ( int i = 0; i < ips.Length; ++i )
                {
                    if ( !list.Contains( ips[i] ) )
                    {
                        list.Add( ips[i] );

                        Console.WriteLine( "Address: {0}:{1}", ips[i], port );
                    }
                }
            }
            catch
            {
            }
        }