System Net Sockets C# by API

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
class MainClass 
{
    [STAThread]
    static void Main(string[] args)
    {
        TcpClient MyClient = new TcpClient();
        MyClient.Connect("localhost", 10000);
        NetworkStream MyNetStream = MyClient.GetStream();
            
        if(MyNetStream.CanWrite && MyNetStream.CanRead)
        {
            Byte[] sendBytes = Encoding.ASCII.GetBytes("Is anybody there");
            MyNetStream.Write(sendBytes, 0, sendBytes.Length);
      
            byte[] bytes = new byte[MyClient.ReceiveBufferSize];
            MyNetStream.Read(bytes, 0, (int) MyClient.ReceiveBufferSize);
    
            string returndata = Encoding.ASCII.GetString(bytes);
            Console.WriteLine("This is what the host returned to you: " + returndata);
        }else if (!MyNetStream.CanRead) {
            Console.WriteLine("You can not write data to this stream");
            MyClient.Close();
        }else if (!MyNetStream.CanWrite)
        {             
            Console.WriteLine("You can not read data from this stream");
            MyClient.Close();
        }   
    }   
}