потоки

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Net.Sockets;
using System.IO;

namespace ChatTCP
{
    internal class Client
    {
        public string message;
        public string text;
        public string name;
        public string sendMessage;

        static TcpClient client = new TcpClient();
        static Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        static Stream stream = null;
        static public string address = "127.0.0.1";
        static public short port = 2000;
        static IPEndPoint ep = new IPEndPoint(IPAddress.Parse(address), port);
        public bool Connect()
        {
            try
            {
                client.Connect(ep);
                socket.Connect(ep);
                if(client.Connected && socket.Connected)
                {
                    stream = new NetworkStream(socket);
                    message = "Подключение выполнено";
                    return true;
                    ProcessMessage();
                }
                else
                {
                    return false;
                }
            }
            catch(Exception e)
            {
                message = $"Не удалось подключится к серверу: {e}";
                return false;
            }
        }
        public void SendMessage()
        {
            StreamWriter sw = new StreamWriter(stream);
            try
            {
                sw.WriteLine("\n" + name + ": " + text);
            }
            catch(Exception e)
            {
                message = e.ToString();
            }
        }
        private void ProcessMessage()
        {
            StreamReader sr = new StreamReader(stream);
            while (client.Connected)
            {
                try
                {
                    sendMessage = sr.ReadLine();
                }
                catch (Exception e)
                {
                    message = e.ToString();
                }
                System.Threading.Thread.Sleep(500);
            }
        }
        public void Disconnect()
        {
            try
            {
                client.Close();
            }
            catch(Exception e)
            {
                message = e.ToString();
            }
        }
    }
}