private void Lbsorden_MouseMove(object sender, MouseEventArgs e)
{
int index = Lbsorden.IndexFromPoint(Lbsorden.PointToClient(Cursor.Position));
if (index != prevIndex)
{
prevIndex = index;
Lbsorden.Invalidate();
}
}
private void Lbsorden_MouseLeave(object sender, EventArgs e)
{
prevIndex = -1;
Lbsorden.Invalidate();
}