服务器端读NetworkStream ，还是多就是少是咋回？？？？？？？？？？？

Question

 while (true)
            {
                TcpClient tc = listener.AcceptTcpClient();
                NetworkStream ns = tc.GetStream();
                byte[] buffer = new byte[1024];
                int postion = 1;
                string data = string.Empty;            
                while (postion > 0)
                {
                    postion = ns.Read(buffer, 0, buffer.Length);
                    data = System.Text.Encoding.UTF8.GetString(buffer, 0, buffer.Length);
                    //System.Threading.Thread.Sleep(50);
                    Console.WriteLine(data);
                }
                
                tc.Close();            }

Answer 1

服务器端读NetworkStream ，不是多就是少是咋回？？？？？？？？？？？ 

Answer 2

在服务器端读发送过来的NetworkStream ，，转成字符串和客户端发过来的字符串对比，不是多，就是少