Programs Knowledge

//自訂panel框顏色, 預設沒有設定顏色屬性
private void panal1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
    e.Graphics.DrawRectangle(
        Pens.Gainsboro,//設定顏色
        e.ClipRectangle.Left,
        e.ClipRectangle.Top,
        e.ClipRectangle.Width - 1,
        e.ClipRectangle.Height - 1);

    base.OnPaint(e);
}

private void Conpoment_Paint(object sender, PaintEventArgs e)
{
    ControlPaint.DrawBorder(
        e.Graphics, panel1.ClientRectangle,
        Color.Gold, 1, ButtonBorderStyle.Solid,
        Color.Green, 2, ButtonBorderStyle.Outset,
        Color.Red, 3, ButtonBorderStyle.Inset,
        Color.Gainsboro, 4, ButtonBorderStyle.Dotted);
}