Timers

Question

sir,

          I have a query here, I want the start and stop to be the same button and  I want to display the time that tells me how many seconds it took me to start and stop. I am unable to do that seeking your help. here is my code:

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace Timers4

{

    public partial class TimingGameForm : Form

    {

        public TimingGameForm()

        {

            InitializeComponent();

        }

        private int elapsed = 0;

        private bool started = false;

       

        private void Start_Click(object sender, EventArgs e)

        {

            if (started == true)

            {

                timer1.Enabled = true;

                Estimatelbl.Text = "Running....";

                

            }

            else if (started == false)

            {

                timer1.Enabled = false;

                Timelbl.Text = "that took" + elapsed + "seconds";

                

            }

            

        }

          private void timer_Tick(object sender, EventArgs e)

          {

              elapsed += 1;     

              

   

                

             

          }

      }

}