using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

namespace WindowsApplication1

public partial class Form1 : Form

public Form1()

private void Form1_Load( sender, EventArgs e)

private void timer1_Tick( sender, EventArgs e)

textBox1.Text = Convert.ToString((int.Parse(textBox1.Text) + 1));

if ((int.Parse(textBox1.Text))==100)

textBox1.Text=Convert.ToString(0);

textBox2.Text = Convert.ToString((int.Parse(textBox2.Text) + 1));

if ((int.Parse(textBox2.Text)) == 60)

textBox2.Text = Convert.ToString(0);

textBox3.Text = Convert.ToString((int.Parse(textBox3.Text) + 1));

if ((int.Parse(textBox3.Text)) == 60)

textBox3.Text = Convert.ToString(0);

textBox4.Text = Convert.ToString((int.Parse(textBox4.Text) + 1));

private void button1_Click( sender, EventArgs e)

private void button2_Click( sender, EventArgs e)

private void button3_Click( sender, EventArgs e)