DataSet表适配器管理器帮助

Question

我有一个简单的控制台应用程序，我正在尝试更新客户和订单表，我收到一条错误消息：

The INSERT statement conflicted with the FOREIGN KEY constraint "FK_Orders_Customers". The conflict occurred in database "CustomerOrder", table "dbo.Customers", column 'Id'.
The statement has been terminated.

我错过了一些明显的东西吗？

    RsNorthwinds ds = new RsNorthwinds();
    RsNorthwinds.CustomersRow cRow = ds.Customers.NewCustomersRow();
    cRow.Name = "John Smith";
    ds.Customers.AddCustomersRow(cRow);
    RsNorthwinds.OrdersRow oRow = ds.Orders.NewOrdersRow();
    oRow.CustomerId = cRow.Id;
    oRow.OrderDate = "9/26/11";
    ds.Orders.AddOrdersRow(oRow);

    RsNorthwindsTableAdapters.TableAdapterManager tm =
        new DataTableAdapterTester.RsNorthwindsTableAdapters.TableAdapterManager();
    tm.OrdersTableAdapter = new DataTableAdapterTester.RsNorthwindsTableAdapters.OrdersTableAdapter();
    tm.CustomersTableAdapter = new DataTableAdapterTester.RsNorthwindsTableAdapters.CustomersTableAdapter();
    tm.UpdateAll(ds);

Answer 1

无论问题出在C＃端，都要使用Sql Profiler来检查在SQL Server端执行的sql语句的顺序。这样您就可以快速找到问题。

可能UpdateAll方法以无效顺序执行两次插入。使用表适配器而不是ORMapper，您会问自己这些问题。