protected void UnselectSpareParts_OnClick(object sender, EventArgs e)
{
decimal partsPrice = 0M;
CarServicePresentationUtility.MoveListItems(this.selectedSpareParts, this.unselectedSpareParts, true, this.persister, out partsPrice);
this.sparePartsPrice.Text = partsPrice.ToString();
this.repairPrice.Text = partsPrice.ToString();
}