C# Asynchronous Operation Background Run (backgroundworker class) Example

using System;
using ;
using ;
using ;
using ;
using ;
using ;
using ;
using ;

namespace TestBackgroundWork
{
    public partial class Form1 : Form
    {

        public Form1()
        {
            InitializeComponent();
            InitializeBackgoundWorker();
        }

        private BackgroundWorker backgroundWorker1;

        private void InitializeBackgoundWorker()
        {
            this.backgroundWorker1 = new ();
            this. = true;
            this. = true;
            this. += new DoWorkEventHandler(backgroundWorker1_DoWork);
            this. += new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged);
            this. += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);
        }

//***************The callback function of backgroundWorker1**********
        void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker worker = sender as BackgroundWorker;
            for (int i = 1; i <= 10; i++)
            {
                if ()
                {
                   = true;
                }
                else
                {
                    (500);
                    int percentComplete = (int)((float)i / (float)10 * 100);
                    (percentComplete);
                }
            }
        }

        void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            this. = ;
        }

        void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if ( != null)
            {
                ();
            }
            else if ()
            {
                = "Canceled";
            }
            else
            {
                = "Completed";
            }
            = true;
            = false;
        }

//***************The callback function of backgroundWorker1**********

        private void startBtn_Click(object sender, EventArgs e)
        {
            = ;
            = false;
            = true;
//Start asynchronous operation.
            ();
        }

        private void stopBtn_Click(object sender, EventArgs e)
        {
            ();
        }
    }
}