我有一个运行 oData 的 WCF 数据服务，并尝试将数据插入其中。我正在尝试从 Windows 8 客户端异步。
我的实体如下所示：
Customer 1 -> m CustomerAddress 1 <- m Address
我可以通过简单地调用 AddObject 方法插入地址或客户并保存更改：
context.AddObject("Customer",new Customer { FirstName="foo" });
context.AddObject("Address",new Address { Street="bar" });
await context.SaveChangesBatch(); //a extension class that handels the BeginSaveChanges async calls as batch
我还可以添加地址和客户之间的关系
Customer customer=new Customer { FirstName="foo" };
Address orderAddress=new Address { Street="bar" };
CustomerAddress customerAddress = new CustomerAddress { Customer = customer, Address = orderAddress };
context.AddObject("Customer",customer);
context.AddObject("Address",orderAddress);
context.AddObject("CustomerAddress",customerAddress);
await context.SaveChangesBatch();
但是，我无法在上下文中添加第二个相关地址：
Address orderAddress=new Address { Street="bar" };
Address deliveryAddress=new Address { Street="bar2" };
CustomerAddress customerAddress = new CustomerAddress { Customer = customer, Address = orderAddress };
Customer customer=new Customer { FirstName="foo" };
CustomerAddress customerAddress = new CustomerAddress { Customer = customer, Address = deliveryAddress };
context.AddObject("Customer",customer);
context.AddObject("Address",orderAddress);
context.AddObject("Address",deliveryAddress);
context.AddObject("CustomerAddress",customerAddress);
context.AddObject("CustomerAddress",customerAddress2);
await context.SaveChangesBatch();
在这篇文章中，我了解到只需像这样插入相关实体就足够了：
CustomerAddress customerAddress = new CustomerAddress { Customer = customer, Address = orderAddress };
CustomerAddress2 customerAddress = new CustomerAddress { Customer = customer, Address = deliveryAddress };
context.AddObject("CustomerAddress",customerAddress);
context.AddObject("CustomerAddress",customerAddress2);
await context.SaveChangesBatch(); //On save, it should automatically insert customer and order but it dosn't work :(
这将是完美的，但它不起作用。该错误显示外键错误。我有什么设置错误吗？我的 EF 看起来像这样：
我是否必须在foregin key properties上添加一些东西：（我使用的是模型优先方法）
作为附加节点：我使用的是 Azure SQL 数据库，因此不允许使用复合键 :(