问题描述
我可以通过"UpdateOnSubmit"排队一系列插入内容。在"SubmitChanges"上进行交易的方法，如果有任何失败，则使用事务回滚。但是，我对如何管理更新感到困惑，因为似乎没有一个平等的"UpdateOnSubmit"。这可以包含在SubmitChanges集合中。
I can queue up a series of Inserts via the "UpdateOnSubmit" method that are transacted on "SubmitChanges", with a transaction rollback if any fail. However, I am confused on how updates are managed as there does not seem to be an equilivent "UpdateOnSubmit" that can be included in the SubmitChanges collection.
我似乎在这里缺少一些基本的东西。有人可以解释我会怎样做：
I seem to be missing something basic here. Can someone explain how I would do something like:
dctx.customer.InsertOnSubmit（cust）;
dctx.vehicle.UpdateOnSubmit（veh）;
dctx.stock.InserOnSubmit （股票）;
dctx.customer.InsertOnSubmit(cust);
dctx.vehicle.UpdateOnSubmit(veh);
dctx.stock.InserOnSubmit(stock);
dctx.SubmitChanges（ConflictMode.ContinueOnConflict）;
dctx.SubmitChanges(ConflictMode.ContinueOnConflict);
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