public int AddOrder(Order order)
{
int maxId = WebSiteDB.MyNorthwind.Orders.Max(x => x.OrderID);
order.OrderID = maxId + 1;
if( order.CustomerID > 0 )
order.CustomerName = WebSiteDB.MyNorthwind.Customers.Find(c => c.CustomerID == order.CustomerID).CustomerName;
// 为每个订单明细记录设置【商品属性】，累加订单总金额。
for( int i = order.Details.Count - 1; i >= 0; i-- ) {
OrderDetail detail = order.Details[i];
Product product = WebSiteDB.MyNorthwind.Products.FirstOrDefault(p => p.ProductID == detail.ProductID);
if( product != null ) {
detail.UnitPrice = product.UnitPrice;
detail.ProductName = product.ProductName;
detail.Unit = product.Unit;
order.SumMoney += detail.UnitPrice * detail.Quantity;
}
else {
order.Details.Remove(detail);
}
}
WebSiteDB.MyNorthwind.Orders.Add(order);
return order.OrderID;
}
public Order ConvertToOrderItem()
{
// 验证对象是否有效
string error = this.IsValid();
if( string.IsNullOrEmpty(error) == false )
throw new MyMessageException(error);
// 创建实体对象
Order order = new Order();
DateTime now = DateTime.Now;
order.OrderDate = new DateTime(this.OrderDate.Year, this.OrderDate.Month, this.OrderDate.Day, now.Hour, now.Minute, now.Second);
if( this.CustomerID > 0 )
order.CustomerID = this.CustomerID;
order.Comment = this.Comment;
order.Details = new List<OrderDetail>();
// 将 id1=2;id2=3; 的格式字符串分解出来
List<KeyValuePair<string, string>> detail = this.OrderDetail.SplitString(';', '=');
// 将列表转成订单明细
detail.ForEach(x => order.Details.Add(new OrderDetail { ProductID = int.Parse(x.Key), Quantity = int.Parse(x.Value) }));
return order;
}