/// <summary>
/// This method invokes method for adding item to order.
/// </summary>
public void AddItemExecute()
{
try
{
orderItems.AddOrderItem(MenuItem, Ordered, Quantity);
//invokes method to update a list of ordered items
OrderList = orderItems.GetOrderedItems(Username);
TotalPrice = newOrder.CalculateTotalPrice(Ordered.OrderID);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}