C# Winform画图绘制圆形

private Color RadioColor1 = Color.Green; //显示不同状态灯的颜色
private Color RadioColor2 = Color.Blue;

private Color RadioColor3 = Color.Pink;

//封装修改颜色方法

public void UpdateLight(int light) 
        {
            label1.Text = light.ToString();
        }

//设值label标签label1_Paint事件

private void label1_Paint(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;