C#

private void button1_Click(object sender, EventArgs e)
        {
            PictureBox pic = new PictureBox();
            pic.Image = Image.FromFile("c:\\1.gif");
            this.Controls.Add(pic);

            for (int i = 0; i < int.MaxValue; i++)
            {
                //my work
            }
            pic.Dispose();
        }

private void btnTEST_Click(object sender, EventArgs e)
{
for (int i = 0; i < 10; i++)
{
//Port3.BreakState = true;//serialport
label1.Text = "a"; //I want this letter to flash itself
}
}