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;
using System.Threading;

namespace WindowsFormsApplication11
{
    public partial class Form1 : Form
    {
        private BackgroundWorker worker;

        public Form1()
        {
            InitializeComponent();
            worker = new BackgroundWorker();
            worker.DoWork += new DoWorkEventHandler(worker_DoWork);
            worker.ProgressChanged += new ProgressChangedEventHandler(worker_ProgressChanged);
            worker.WorkerReportsProgress = true;
        }

        void worker_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            progressBar1.Value = e.ProgressPercentage;
            if (e.ProgressPercentage == 100)
                label1.Text = "Calculation complete!";
        }

        void worker_DoWork(object sender, DoWorkEventArgs e)
        {
            for (int i = 1; i < 101; i++)
            {
                worker.ReportProgress(i);
                Thread.Sleep(50);
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            label1.Text = "Calculating...";
            worker.RunWorkerAsync();
        }
    }
}