C#认证题4（使用标准Windons窗体控件）

private void vScrollBar1_ValueChanged(object sender, EventArgs e)
        {
            this.BackColor = Color.FromArgb(vScrollBar1.Value, vScrollBar2.Value, vScrollBar3.Value);
        }

        private void vScrollBar2_ValueChanged(object sender, EventArgs e)
        {
            this.BackColor = Color.FromArgb(vScrollBar1.Value, vScrollBar2.Value, vScrollBar3.Value);
        }

        private void vScrollBar3_ValueChanged(object sender, EventArgs e)
        {
            this.BackColor = Color.FromArgb(vScrollBar1.Value, vScrollBar2.Value, vScrollBar3.Value);
        }