amespace MultiChatServer {
    public partial class ChatForm : Form {
        delegate void AppendTextDelegate(Control ctrl, string s);
        AppendTextDelegate _textAppender;
        Socket mainSock;
        IPAddress thisAddress;
        public ChatForm() {
            InitializeComponent();
            mainSock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
            _textAppender = new AppendTextDelegate(AppendText);
            DataTable table = new DataTable();
            table.Columns.Add("");
            table.Columns.Add("Number", typeof(int));
            table.Columns.Add("Data", typeof(float));
            table.Columns.Add("");
            table.Rows.Add("", "1", "99.5", "");
            table.Rows.Add("", "2", "24.2", "");
            table.Rows.Add("", "3", "53.2", "");
            dataGridView1.DataSource = table;
        }//선언
        
        void AppendText(Control ctrl, string s) {
            if (ctrl.InvokeRequired) ctrl.Invoke(_textAppender, ctrl, s);
            else {
                string source = ctrl.Text;
                ctrl.Text = source + Environment.NewLine + s;
            }
        }
        void OnFormLoaded(object sender, EventArgs e) {
            IPHostEntry he = Dns.GetHostEntry(Dns.GetHostName());
       
            foreach (IPAddress addr in he.AddressList) {
                if (addr.AddressFamily == AddressFamily.InterNetwork) {
                    thisAddress = addr;
                    break;
                }    
            }
          
            if (thisAddress == null)
      
                thisAddress = IPAddress.Loopback;
            txtAddress.Text = thisAddress.ToString();
        }
        void BeginStartServer(object sender, EventArgs e) {
            int port;
            if (!int.TryParse(txtPort.Text, out port)) {
                MsgBoxHelper.Error("포트 번호가 잘못 입력되었거나 입력되지 않았습니다.");
                txtPort.Focus();
                txtPort.SelectAll();
                return;
            }
            IPEndPoint serverEP = new IPEndPoint(thisAddress, port);
            mainSock.Bind(serverEP);
            mainSock.Listen(10);
            
            mainSock.BeginAccept(AcceptCallback, null);
        }
        List<Socket> connectedClients = new List<Socket>();
        void AcceptCallback(IAsyncResult ar) {
           
            Socket client = mainSock.EndAccept(ar);
           
            mainSock.BeginAccept(AcceptCallback, null);
            AsyncObject obj = new AsyncObject(4096);
            obj.WorkingSocket = client;
          
            connectedClients.Add(client);
            
            AppendText(txtHistory, string.Format("사용자 (@ {0})가 연결되었습니다.", client.RemoteEndPoint));
            
            client.BeginReceive(obj.Buffer, 0, 4096, 0, DataReceived, obj);
        }
        void DataReceived(IAsyncResult ar) {
            AsyncObject obj = (AsyncObject)ar.AsyncState;
           
            //예외처리 구문 (튕김방지)
            string text = Encoding.UTF8.GetString(obj.Buffer);
            
            string[] tokens = text.Split(' ');
            string ip = tokens[0];
            string msg = tokens[0];
           
            AppendText(txtHistory, string.Format("[받음]{0}: {1}", ip, msg));
            
            
            for (int i = connectedClients.Count - 1; i >= 0; i--) {
                Socket socket = connectedClients[i];
                if (socket != obj.WorkingSocket) {
                    try { socket.Send(obj.Buffer); }
                    catch {
                       
                        try { socket.Dispose(); } catch { }
                        connectedClients.RemoveAt(i);
                    }
                }
            }
            try
            {
                int received = obj.WorkingSocket.EndReceive(ar);
            }
            catch (Exception e)
            {
                string Message = "서버가 끊어졌습니다" + e.Message;
                MessageBox.Show(Message);
                return;
            }
            obj.ClearBuffer();
         
            obj.WorkingSocket.BeginReceive(obj.Buffer, 0, 4096, 0, DataReceived, obj);
        }
        void OnSendData(object sender, EventArgs e) {
            
            if (!mainSock.IsBound) {
                MsgBoxHelper.Warn("서버오프라인 상태");
                return;
            }
            
            
            string tts = txtTTS.Text.Trim();
            if (string.IsNullOrEmpty(tts)) {
                MsgBoxHelper.Warn("텍스트가 입력되지 않았습니다!");
                txtTTS.Focus();
                return;
            }
            
           
            byte[] bDts = Encoding.UTF8.GetBytes(thisAddress.ToString() + '\x01' + tts);
           
            for (int i = connectedClients.Count - 1; i >= 0; i--) {
                Socket socket = connectedClients[i];
                try { socket.Send(bDts); } catch {
                   
                    try { socket.Dispose(); } catch { }
                    connectedClients.RemoveAt(i);
                }
            }
            
            AppendText(txtHistory, string.Format("[보냄]{0}: {1}", thisAddress.ToString(), tts));
            txtTTS.Clear();
        }
        private void lblPort_Click(object sender, EventArgs e)
        {
        }
        private void txtHistory_TextChanged(object sender, EventArgs e)
        {
        }
        private void lblAddress_Click(object sender, EventArgs e)
        {
        }
        private void tblMainLayout_Paint(object sender, PaintEventArgs e)
        {
        }
현재 제가 c#으로 tcp/ip 송수신프로그램을 만들어서 짜놓고 실행까지 구현을 해놓은 코드입니다.
다름이아니라 여기서좀더 나아가 옆에 데이타그리드를 통해 표를만들어
클라이언트 쪽에서 예를들어 [ 1, 99.9% ]
이런식으로 텍스트를 전송하게되면 조건문으로 걸어서 그리드쪽으로자동기입이되도록하고싶은데요..
어느부분에서 어떤함수를대략적으로 추가해야 그리드쪽으로 넘어가는지를 도통모르겠습니다..
조건문은 하다보면 될거같은데 넘어가도록 하는 코드를 어디에무엇을추가해야하는지모르겠어요...
        
        
                    
                    
                    
                    
                    
    
                    
                    
                    
                    
                    
                
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                    [최종 수정일: 9/6/2022]