public Form1() { InitializeComponent(); CheckForIllegalCrossThreadCalls = false; listRoom = new Dictionary <string, Room>(); listPlayer = new Dictionary <string, Player>(); LoadQuestion(); //IP: Địa chỉ của server IP = new IPEndPoint(IPAddress.Any, 9999); server = new TCPServer(IP); Thread listen = new Thread(() => { while (true) { Socket client = server.Listen(); if (client != null) { Thread receive = new Thread(() => { while (true) { String buff = server.Receive(client); String[] str = buff.Split('$'); foreach (var item in str) { if (item != String.Empty) { Message mes = new Message(item); AddMessage(mes.Sender + ": " + mes.Opcode + " " + mes.Payload); ProcessData(client, mes); } } } }); receive.IsBackground = true; receive.Start(); } } }); listen.IsBackground = true; listen.Start(); }