Create a new thread

Thread trd;
        private void btnRun_Click(object sender, EventArgs e)
        {
            trd = new Thread(new ThreadStart(this.ThreadTask));
            trd.IsBackground = true;
            trd.Start();
        }

        [STAThread]
        private void ThreadTask()
        {
            //Do something here
        }

        private void btnStop_Click(object sender, EventArgs e)
        {
            if (trd != null)
            {
                trd.Abort();
                trd = null;
            }
        }
        private void btmExit_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }