public abstract IDbConnection Connection{get;} //得到数据库连接 public abstract void Open(); //打开数据库连接 public abstract void Close(); //关闭数据库连接 ..
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... Dim rs As New ADODB.Recordset '定义记录集 conn.Open db '打开数据库连接 rs.Open "zip", conn, adOpenKeyset, adLockPessimistic '打开记录集 ...
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打开与数据库的连接 Open
打开数据库连接并创建了Data项目之后，就可以开始构建查询了。
With a database connection open and a data project created, you're ready to build queries.
我有破发点集，它开始后一个调用的方法打开数据库连接，调试器打开拆卸窗口，并停留在那里。
I have break points set and it starts off well then after a call in a method to open database connection, the debugger opens disassembly window and stays there.
延迟抓取的另一个问题就是在获取到请求的数据前要一直打开数据库连接，否则应用就会抛出一个延迟加载异常。
Another issue with lazy fetching is that the database connection has to be retained until all the required data is fetched else the application will throw a lazy loading exception.
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