public virtual void AddItem(SalesReceiptItem item) { item.Receipt = this; items.Insert(0, item); if (ItemsChanged != null) { ItemsChanged(this, null); } }
public virtual void RemoveItem(SalesReceiptItem item) { if (items.Contains(item)) { items.Remove(item); if (ItemsChanged != null) { ItemsChanged(this, null); } } }
public SalesReceiptItemEventArgs(SalesReceiptItem item) { this.ReceiptItem = item; }