}//CheckSale
//-------------------------------------------------------------------------------------------------------//
/// <summary>
/// Checks for the most recent sale of product to customer.
/// </summary>
/// <param name="cusCode">Customer Code</param>
/// <param name="prodCode">Product Code</param>
/// <returns>Most recent sale or blank sale.</returns>
public Dictionary <string, double> CheckCostPrices(IEnumerable <string> prodCodes)
{
return(ProductReader.GetCostPrices(prodCodes));
}//CheckCostPrices
