C# WinForm修改Panel边框颜色

private void panel1_Paint(object sender, PaintEventArgs e)
{
    ControlPaint.DrawBorder(e.Graphics,
                                this.panel1.ClientRectangle,
                                Color.LightSeaGreen,//7f9db9
                                ,
                                ButtonBorderStyle.Solid,
                                Color.LightSeaGreen,
                                ,
                                ButtonBorderStyle.Solid,
                                Color.LightSeaGreen,
                                ,
                                ButtonBorderStyle.Solid,
                                Color.LightSeaGreen,
                                ,
                                ButtonBorderStyle.Solid);
}