public TransactionItem GetTransactionItem(int transactionItemId)
{
TransactionItem item = null;
if (_transactionItems.ContainsKey(transactionItemId))
{
item = _transactionItems[transactionItemId];
}
else
{
throw new Exception("Item does not exist.");
}
return(item.Clone());
}
public int AddTransactionItem(TransactionItem item)
{
item.Id = _transactionItemId++;
_transactionItems.Add(item.Id, item.Clone());
return(item.Id);
}