关闭数据库连接...非常快速的问题

问题描述

按照主题行，这是一个非常快速的问题...

我在程序的各个位置都有类似的代码:

As per the Subject line, a very quick question ...

I have code similar to this in various places in my program :

If mySqlConn.State = ConnectionState.Closed Then mySqlConn.Open()
            Using mySqlRdr As SqlCeDataReader = mySqlCmd.ExecuteReader()
                mySqlCmd.ExecuteNonQuery()
                mySqlConn.Close()
                Me.Hide()
                MasterForm.Show()
            End Using

我刚刚注意到，尽管我总是在某些地方打开 mySqlConn ...，但我还是关闭了 MySqlConn &在某些地方，我关闭了 mySqlRdr ...我应该做什么，还是应该同时做这两个事情?！?

I''ve just noticed that although I always Open mySqlConn ... in some places I close MySqlConn & in some places I close mySqlRdr ... which should I be doing, or should I be doing both ?!?

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