Winform透明窗体

private void Form2_Load(object sender, EventArgs e)
        {
            this.BackColor = Color.White;
            this.TransparencyKey = Color.White;
            this.Opacity = 1;
            label1.ForeColor = Color.Purple;
            label1.BackColor = Color.White;
            label1.Text = "东篱把酒黄昏后";
        }