1

当我在订单详细信息中插入包含多个项目的订单时，只会插入最后一个订单详细信息项目。

我使用以下代码插入数据库

Try
    order_id = value.ID
    If order_id = 0 Then
        cmd = New SQLiteCommand(insert_order, conn)
        cmd.Parameters.AddWithValue("@customer_id", value.CustomerID)
        cmd.Parameters.AddWithValue("@status", value.Status)
        cmd.Parameters.AddWithValue("@deliver", value.Deliver)
        cmd.Parameters.AddWithValue("@created", Now.ToString("yyyy-MM-dd"))
        cmd.Parameters.AddWithValue("@deleted", "0")
        order_id = Convert.ToInt32(cmd.ExecuteScalar())
    Else
        cmd = New SQLiteCommand(update_order, conn)
        cmd.Parameters.AddWithValue("@customer_id", value.CustomerID)
        cmd.Parameters.AddWithValue("@status", value.Status)
        cmd.Parameters.AddWithValue("@deliver", value.Deliver)
        cmd.Parameters.AddWithValue("@created", Now.ToString("yyyy-MM-dd"))
        cmd.Parameters.AddWithValue("@deleted", "0")
        cmd.Parameters.AddWithValue("@id", order_id)
        cmd.ExecuteNonQuery()
        '// delete previous order details
        cmd = New SQLiteCommand(delete_order_details, conn)
        cmd.Parameters.AddWithValue("@id", order_id)
        cmd.ExecuteNonQuery()
    End If

    '// Add order details
    For Each itm As typOrderDetail In value.orderDetails
        cmd = New SQLiteCommand(insert_order_details, conn)
        cmd.Parameters.AddWithValue("@cloth_id", itm.ClothID)
        cmd.Parameters.AddWithValue("@order_id", order_id)
        cmd.Parameters.AddWithValue("@color", itm.Color)
        cmd.Parameters.AddWithValue("@desc", itm.Desc)
        cmd.Parameters.AddWithValue("@qty", itm.Qty)
        cmd.Parameters.AddWithValue("@cost", itm.Cost)
        cmd.Parameters.AddWithValue("@service_id", itm.ServiceID)
        cmd.Parameters.AddWithValue("@deleted", "0")
        cmd.ExecuteNonQuery()
    Next
    sqlTrans.Commit()
    'If bSave Then sqlTrans.Commit() Else sqlTrans.Rollback()
Catch ex As Exception
    'sqlTrans.Rollback()
    Throw
Finally

    cmd.Dispose()
    conn.Dispose()
End Try

这是sql字符串

插入订单 ([customer_id],[status],[deliver],[created],[deleted]) 值 (@customer_id,@status,@deliver,@created,@deleted);选择 last_insert_rowid();

插入orders_details ([order_id],[service_id],[cloth_id],[desc],[deleted],[qty],[color],[cost]) 值 (@order_id,@service_id,@cloth_id,@desc, @deleted,@qty,@color,@cost)

请问我做错了吗？

4

2 回答 2

1

不是 100% 确定这会修复它，但为所有订单详细信息保留相同的 SQLiteCommand 对象。在循环之外声明它，只需更新参数值并在循环中运行查询。

于 2013-07-30T21:31:15.100 回答
1

看不到您如何处理代码中的事务。试试这个（在 C# 中，对不起）：

using(SqliteTransaction tr = con.BeginTransaction()){
   foreach(var itm in value.orderDetails) {
      //construct the command, add parameters, etc.
      ...
      //link the command to the transaction
      cmd.Transaction = tr;
      //execute the command
      cmd.ExecuteNonQuery();
   }
   tr.Commit();
}
于 2013-07-30T21:54:49.240 回答