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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public class MyThread : Form1
        {
            public void Thread1()
            {
                Graphics graph = this.CreateGraphics();
                Pen piros = new Pen(Color.Red);
                Point p1 = new Point(10, 10);
                Point p2 = new Point(20, 10);
                for (int i = 20; i < 100; i += 10)
                {
                    graph.DrawLine(piros, 10, 10, i, 10);
                    Thread.Sleep(500);
                }
            }
        }
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MyThread thr1 = new MyThread();
            Thread t1 = new Thread(new ThreadStart(thr1.Thread1));
            t1.Start();
        }
    }
}