Question

LINQ to SQL - 当插入一行（以及其他几行FK指向此行的PK）时，执行[context]是否足够。[MainTable] .InsertOnSubmit（row），或者我还需要为其他行调用它吗？

这是一个精简代码示例（C＃）：

//Forgive the contrived example (off the top of my head) :)

//Main row
Order order = new Order
{
    itemId     = (int)    data["itemNumber"],
    address    = (string) data["address"]
};
db.Orders.InsertOnSubmit(order); //would be nice to only have to submit here.

//Related rows
OrderPerson orderPerson = new OrderPerson
{
    Order = order,
    //other things, etc.
    orderRoleId = RoleIds.Customer
};
//Q: need to do "db.OrderPerson.InsertOnSubmit(orderPerson);" here?

OrderHistoryEntry historyEntry = new OrderHistoryEntry
{
    Order = order,
    //other things, etc.
    historyTypeId = HistoryIds.Ordered
};
//Q: need to do "db.OrderHistoryEntry.InsertOnSubmit(historyEntry);" here?

db.SubmitChanges();

是否足以执行：db.Orders.InsertOnSubmit(order);或者是否还需要为相关行执行InsertOnSubmit（orderPerson和historyEntry）？

只在主行上运行一次会很不错。 MSDN示例就是这样，但它们都有相反的关系（引用主行中的其他行）。

感谢您的想法。

Answer 1

相反怎么样？

Order order = new Order
{
    itemId     = (int)    data["itemNumber"],
    address    = (string) data["address"]
};

OrderPerson orderPerson = new OrderPerson
{
    orderRoleId = RoleIds.Customer
};
order.OrderPersons.Add(orderPerson);

OrderHistoryEntry historyEntry = new OrderHistoryEntry
{
    historyTypeId = HistoryIds.Ordered
};
order.OrderHistoryEntries.Add(historyEntry);

db.Orders.InsertOnSubmit(order);

db.SubmitChanges();

我是否需要为引用主行的每一行调用InsertOnSubmit？

1 个答案: