两种使用Try块的方法之间的区别

Question

如果我需要在同一数据库的3个表上记录数据，接下来的两种方式对我来说是一样的

坐着1

Try
    Using (conn)
    conn.Open()

        Try
            'Handle Table 1
        Catch ex As Exception
            MsgBox(ex.ToString())
        End Try

        Try
            'Handle Table 2
        Catch ex As Exception
            MsgBox(ex.ToString())
        End Try

        Try
            'Handle Table 3
        Catch ex As Exception
            MsgBox(ex.ToString())
        End Try

    End Using

Catch ex As Exception
    MsgBox(ex.ToString())
End Try

嵌套2 使用块是主要的

Using conn As New SQLiteConnection(SQLiteConnStr)
    Try
        conn.Open()

        Try
            'Handle Table 1
        Catch ex As Exception
            MsgBox(ex.ToString())
        End Try

        Try
            'Handle Table 2
        Catch ex As Exception
            MsgBox(ex.ToString())
        End Try

        Try
            'Handle Table 3
        Catch ex As Exception
            MsgBox(ex.ToString())
        End Try

    Catch ex As Exception
        MsgBox(ex.ToString())
    End Try

End Using

两种方式相同或一种方式更好，因为更好地处理“Catch ex as Exception？