C# - BackgroundWorker and ProgressBar

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 WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

            // To report progress from the background worker we need to set this property

            backgroundWorker1.WorkerReportsProgress = true;

            // This event will be raised on the worker thread when the worker starts

            backgroundWorker1.DoWork += new DoWorkEventHandler(backgroundWorker1_DoWork);

            // This event will be raised when we call ReportProgress

            backgroundWorker1.ProgressChanged += new

                   ProgressChangedEventHandler(backgroundWorker1_ProgressChanged);

        }

        private void Form1_Load(object sender, EventArgs e)

        {

            backgroundWorker1.RunWorkerAsync();

        }

        // On worker thread so do our thing!

        void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)

        {

            // Your background task goes here, 150 Task

            for (int i = 1; i <= 150; i++)

            {

                decimal percentage = (Convert.ToDecimal(i) / Convert.ToDecimal(137)) *

                                      Convert.ToDecimal(100);

                int ProgressValue = Convert.ToInt32(percentage);

                // Report progress to 'UI' thread

                backgroundWorker1.ReportProgress(ProgressValue);

                // Simulate long task

                System.Threading.Thread.Sleep(100);

            }

        }

        // Back on the 'UI' thread so we can update the progress bar

        void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)

        {

            // The progress percentage is a property of e

            progressBar1.Value = e.ProgressPercentage;

        }

    }

}