AIM : Design an application that uses the concept of User Control (Stop Watch).

Source Code :

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Drawing;

using System.Data;

using System.Linq;

using System.Text;

using System.Windows.Forms;

 

namespace nit

{

    public partial class UserControl1 : UserControl

    {

        int hr, min, sec;

        public UserControl1()

        {

            InitializeComponent();

        }

 

        private void button1_Click(object sender, EventArgs e)

        {

            timer1.Start();

            timer1.Interval = 1000;

           

 

        }

 

        private void timer1_Tick(object sender, EventArgs e)

        {

           

            sec++;

            if (sec == 60)

            {

                min++;

                sec = 0;

            }

 

            if (min == 60)

            {

                hr++;

                min = 0;

            }

            label1.Text = hr.ToString();

            label2.Text = min.ToString();

            label3.Text = sec.ToString();

 

        }

 

        private void button2_Click(object sender, EventArgs e)

        {

            timer1.Stop();

 

        }

        private void button3_Click(object sender, EventArgs e)

        {

            timer1.Stop();

            hr = 0;

           min = 0;

           sec = 0;

           label1.Text = hr.ToString();

           label2.Text = min.ToString();

           label3.Text = sec.ToString();

        }

    }

}

Output: