Documentation

BackgroundWorker

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

namespace BackgroundWorker
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnStart_Click(object sender, EventArgs e)
        {
            progressBar1.Value = 1;
            progressBar1.Maximum = Int32.Parse(txtNumber.Text);
            txtStart.Text = DateTime.Now.ToLongTimeString();
            backgroundWorker1.RunWorkerAsync();
            
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            for (int i = 1; i < Int32.Parse(txtNumber.Text); i++)
            {
                Thread.Sleep(1000);
                backgroundWorker1.ReportProgress(0);
            }
        }

        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            if (progressBar1.Value != progressBar1.Maximum)
            {
                progressBar1.Value += 1;
                txtEnd.Text = DateTime.Now.ToLongTimeString();
            }
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            //MessageBox.Show("Done"); 
            txtEnd.Text = DateTime.Now.ToLongTimeString();
        }
    }
}