/// <summary>
/// Attempts to edit specified StockItem in the StockItem collection.
/// Throws an ArgumentException if the item can not be found.
/// </summary>
/// <param name="si">StockItem to be edited.</param>
/// <param name="stockCode">New StockCode</param>
/// <param name="supplier">New SupplierName</param>
/// <param name="name">New Name</param>
/// <param name="currentStock">New CurrentStock</param>
/// <param name="reqStock">New RequiredStock</param>
/// <param name="price">New Price</param>
internal void EditStockItem(StockItem si, string stockCode, string supplier, string name, int currentStock, int reqStock, double price)
{
if (si != null)
{
si.EditStockItem(stockCode, name, supplier, price, reqStock, currentStock);
}
else
{
throw new ArgumentNullException("Stock item to edit not present.");
}
}
