ProgOb/08_2_Threads/Form1.cs

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 _08_2_Threads
{
  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
    }

    volatile bool STOP = false;

    private void button1_Click(object sender, EventArgs e)
    {
      button2.Focus();
      STOP = false;
      listBox1.Items.Clear();
      int n = 100;
      for (int i = 0; i < n; i++)
      {
        listBox1.Items.Add($"{i}");
        Thread.Sleep(100);
        Application.DoEvents();
        progressBar1.Value = 100 * i / n;
        if (STOP)
          break;
      }
    }

    private void button2_Click(object sender, EventArgs e)
    {
      STOP = true;
    }

    private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
      progressBar1.Value = e.ProgressPercentage;
      label1.Text = $"Jest godz {DateTime.Now:HH:mm:ss} wykonano {e.ProgressPercentage} % operacji";
    }

    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
      int n = (int)e.Argument;
      for (int i = 0; i < n; i++)
      {
        //if (i == 50)
        //  throw new Exception("Symulujemy błąd!");

        listBox1.Invoke(new Action(() => { listBox1.Items.Add($"{i}"); }));
        Thread.Sleep(100);
        backgroundWorker1.ReportProgress((i + 1) * 100 / n);
        if (backgroundWorker1.CancellationPending)
        {
          e.Cancel = true;
          break;
        }
      }
      e.Result = new string[] { "Koniec operacji OK", "129847293685.123" };
    }

    private void button3_Click(object sender, EventArgs e)
    {
      STOP = false;
      listBox1.Items.Clear();
      backgroundWorker1.RunWorkerAsync(120);
    }

    private void button4_Click(object sender, EventArgs e)
    {
      backgroundWorker1.CancelAsync();
    }

    private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
      if (e.Error != null)
        MessageBox.Show(e.Error.Message);
      else
      {
        if (e.Cancelled)
          MessageBox.Show("User anulował operację!");
        else
        {
          if (e.Result != null)
          {
            string[] res = e.Result as string[];
            MessageBox.Show($"Operacja zakończona\r\n{res[0]}\r\n{res[1]}");
          }
          else
            MessageBox.Show($"Operacja zakończona");
        }
      }
    }



    Thread thread;
    private void button6_Click(object sender, EventArgs e)
    {
      listBox1.Items.Clear();
      thread = new Thread(() =>
      {
        int n = 100;
        for (int i = 0; i < n; i++)
        {
          listBox1.Invoke(new Action(() =>
          {
            listBox1.Items.Add($"{i}");
            progressBar1.Value = (i + 1) * 100 / n;
          }));
          Thread.Sleep(100);
        }
      });
      thread.Start();
    }

    private void button5_Click(object sender, EventArgs e)
    {
      thread.Suspend();
    }

    private void button7_Click(object sender, EventArgs e)
    {
      thread.Resume();
    }

    private void button8_Click(object sender, EventArgs e)
    {
      if (thread != null && thread.ThreadState == ThreadState.Running)
      {
        thread.Abort();
      }
    }


    void robota(object o)
    {
      int n = (int)o;
      for (int i = 0; i < n; i++)
      {
        listBox1.Invoke(new Action(() =>
        {
          listBox1.Items.Add($"{i}");
          progressBar1.Value = (i + 1) * 100 / n;
        }));
        Thread.Sleep(100);
      }
    }


    private void button9_Click(object sender, EventArgs e)
    {
      listBox1.Items.Clear();
      thread = new Thread(robota);
      thread.Start(90);
    }

    private void button10_Click(object sender, EventArgs e)
    {
      Task.Run(() =>
      {
        int n = 100;
        for (int i = 0; i < n; i++)
        {
          listBox1.Invoke(new Action(() =>
          {
            listBox1.Items.Add($"{i}");
            progressBar1.Value = (i + 1) * 100 / n;
          }));
          Thread.Sleep(100);
        }
      });
    }
  }
}