Winform 实现窗体淡出效果

通过按键点击使能定时器，使窗体透明化程度增加

private void button2_Click(object sender, EventArgs e)
 {
     timer1.Enabled = true;
 }

private void timer1_Tick(object sender, EventArgs e)
        {
            if(this.Opacity >= 0.025)
            {
                this.Opacity -= 0.025;
            }
            else
            {
                timer1.Enabled = false;
                this.Close();
                Application.Exit();
            }
        }