// Programmer: Janet Joy
// A global variable as a counter.
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;

namespace counter
{
    public partial class Form1 : Form
    {
        // Make counter global.
        int counter = 0;
        public Form1()
        {
            InitializeComponent();
        }

        private void btnCount_Click(object sender, EventArgs e)
        {
           // Add 1 to counter and display as text of form.
            counter++;
            this.Text = "" + counter;
        }
    }
}