protected override void OnPaint(PaintEventArgs e)
{
if (UI.IsControlPaintingEnabled(this))
{
Size itemSize = ItemSize;
Rectangle firstItemRect = new Rectangle(-this.scrollOffset, 0, itemSize.Width, itemSize.Height);
for (int i = 0; i < this.items.Count; ++i)
{
if (IsItemVisible(i))
{
Point itemOffset = new Point(firstItemRect.X + itemSize.Width * i, firstItemRect.Y);
DrawItem(e.Graphics, this.items[i], itemOffset);
}
}
}
base.OnPaint(e);
}