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

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

        private void buttonStart_Click(object sender, EventArgs e)
        {
            backgroundWorker1.RunWorkerAsync();
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker worker = sender as BackgroundWorker;
            AufwaendigerVorgang2(worker, e);
        }

        private void backgroundWorker1_RunWorkerCompleted()
        {
            
        }

        private void buttonStop_Click(object sender, EventArgs e)
        {
            backgroundWorker1.CancelAsync();
        }

        private void backgroundWorker1_ProgressChanged(ProgressChangedEventArgs e)
        {
            progressBar1.Value = e.ProgressPercentage;
        }

        private void AufwaendigerVorgang2(BackgroundWorker worker, DoWorkEventArgs e)
        {
            for (int i = 1; i ≤ 10; i++)
            {
                if (worker.CancellationPending == true)
                {
                    e.Cancel = true;
                    break;
                }
                worker.ReportProgress(i * 10);
                Thread.Sleep(1000);
            }
        }
    }
}