private void ArrangeControls()
{
BtnDelete.Location = new Point(3, (Height - BtnDelete.Height) / 2);
BtnUp.Location = new Point(Width - BtnUp.Width - 3, Height / 2 - BtnUp.Height);
BtnDown.Location = new Point(Width - BtnDown.Width - 3, Height / 2);
var left = BtnDelete.Right + 3;
ItemsPanel.SetBounds(left, 0, BtnUp.Left - left - 3, Height);
}