Programs Knowledge

1.

this.panel1.Paint += new System.Windows.Forms.PaintEventHandler(this.panal1_Paint);

//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);

}

2.

this.panel1.Paint += new System.Windows.Forms.PaintEventHandler(Conpoment_Paint);

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

    );

}