Problemer med systemtråden

ikke så vidt jeg ved

men et eksempel til inspiration:

using System;
using System.Drawing;
using System.Windows.Forms;
using System.Threading;

public class MainForm : Form
{
    private ProgressBar bar;
    private Button start;
    private Button abort;
    private Thread t;
   
    public MainForm()
    {
        bar = new ProgressBar();
        start = new Button();
        abort = new Button();
        SuspendLayout();
        bar.Location = new Point(50, 50);
        bar.Size = new Size(200, 50);
        bar.Name = "Progress Bar";
        bar.Minimum = 0;
        bar.Maximum = 60;
        bar.Value = 0;
        bar.Step = 1;
        start.Location = new Point(50,150);
        start.Size = new Size(200, 50);
        start.Name = "Start Button";
        start.Text = "Start";
        start.Click += new EventHandler(StartClick);
        abort.Location = new Point(50,250);
        abort.Size = new Size(200, 50);
        abort.Name = "Abort Button";
        abort.Text = "Abort";
        abort.Click += new EventHandler(AbortClick);
        ClientSize = new Size(300, 350);
        Controls.Add(bar);
        Controls.Add(start);
        Controls.Add(abort);
        Name = "Main Form";
        Text = "Main Form";
        ResumeLayout(false);
    }
    void Copy()
    {
        for(int i = 0; i < 60; i++)
        {
            bar.Value = i;
            Thread.Sleep(1000);
        }
    }
    void StartClick(object sender, EventArgs e)
    {
        t = new Thread(new ThreadStart(Copy));
        t.Start();
    }
    void AbortClick(object sender, EventArgs e)
    {
        t.Abort();         
    }
    [STAThread]
    public static void Main(string[] args)
    {
        Application.Run(new MainForm());
        Application.Exit();
        Environment.Exit(0);
    }
}

Jamen det virker jo. Super - et svar og der er point

kommer her