---

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Reflection.Emit;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace k
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        int minute = 0;
        int second = 0;
        int mlsecond = 0;
        private void Form1_Load(object sender, EventArgs e)
        {
            timer1.Interval = 500;
            minute = 0; second = 0; mlsecond = 0;
            label1.Text = "00";
            label2.Text = "00";
            label3.Visible = true;
            label3.Text = ":";
            button2.Text = "Сбросить";
            button1.Text = "Старт";
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (timer1.Enabled)
            {
                timer1.Enabled = false;
                button1.Text = "Пуск";
                button2.Enabled = true;
            }
            else
            {
                timer1.Enabled = true;
                button1.Text = "Стоп";
                button2.Enabled = false;
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            minute = 0; second = 0; mlsecond = 0;
            label1.Text = "00";
            label2.Text = "00";
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (label3.Visible)
            {
                if (second < 59)
                {
                    second++;
                    if (second < 10)
                        label2.Text = "0" + second.ToString();
                    else
                        label2.Text = second.ToString();
                }

                else
                {
                    if (minute < 59)
                    {
                        minute++;
                        if (minute < 10)
                            label1.Text = "0" + minute.ToString();
                        else
                            label1.Text = minute.ToString();
                        second = 0;
                        label2.Text = "00";
                    }

                    else
                    {
                        minute = 0;
                        label1.Text = "00";

                    }
                }
                label3.Visible = false;
            }
            else
            {
                label3.Visible = true;
            }
        }
    }
}