protected override void OnPaintBackground(PaintEventArgs pevent)
{
SolidBrush back = new SolidBrush(this.BackColor) ;
pevent.Graphics.FillRectangle(back,pevent.ClipRectangle);
}
protected override void OnPaint(PaintEventArgs e)
{
if (!this.DesignMode)
DrawProgress(e.Graphics,e.ClipRectangle) ;