using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.IO;

namespace Maytinhbotuiform
{
    public partial class Form1 : Form
    {
        TcpClient cl;
        StreamWriter sw;
        StreamReader sr;
        public Form1()
        {
            InitializeComponent();
            CheckForIllegalCrossThreadCalls = false;
        }

        private void btOn_Click(object sender, EventArgs e)
        {
            cl = new TcpClient();
            IPEndPoint iep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 9000);
            cl.Connect(iep);
            sr = new StreamReader(cl.GetStream());
            sw = new StreamWriter(cl.GetStream());
        }

        private void btOFF_Click(object sender, EventArgs e)
        {
            sw.WriteLine("QUIT");
            sw.Flush();
            cl.Close();
            Application.Exit();
        }

        private void xoa_Click(object sender, EventArgs e)
        {
            khungketqua.Clear();
        }

        private void button25_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "0";
        }

        private void button19_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "1";
        }

        private void button17_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "2";
        }

        private void button16_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "3";
        }

        private void button12_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "4";
        }

        private void button11_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "5";
        }

        private void button10_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "6";
        }

        private void button6_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "7";
        }

        private void button5_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "8";
        }

        private void button4_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "9";
        }

        private void button24_Click(object sender, EventArgs e)
        {
            khungketqua.Text += ".";
        }

        private void button3_Click(object sender, EventArgs e)
        {
            khungketqua.Text += " + ";
        }

        private void button9_Click(object sender, EventArgs e)
        {
            khungketqua.Text += " - ";
        }

        private void button14_Click(object sender, EventArgs e)
        {
            khungketqua.Text += " * ";
        }

        private void button21_Click(object sender, EventArgs e)
        {
            khungketqua.Text += " / ";
        }

        private void button18_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "QRT ";
        }

        private void button22_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "Sin ";
        }

        private void button2_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "Cos ";
        }

        private void button8_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "Tan ";
        }

        private void button13_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "SQRT ";
        }

        private void button20_Click(object sender, EventArgs e)
        {
            khungketqua.Text += "Log ";
        }

        private void button23_Click(object sender, EventArgs e)
        {
            sw.WriteLine(khungketqua.Text);
            sw.Flush();
            string st = sr.ReadLine();
            khungketqua.Text += "=" + st;
        }

    }
}