问题
Keeping performance on a mobile device in mind, what do you think is the best approach with an SQLCE Connection. Keep it open for the duration of the application or let it close whenever a call to the database is needed.
Obviously this depends a little on the nature of your application however I'm curious to hear what the group has implemented and why.
回答1:
You should definitely watch Steve Lasker's PDC08 session about SQL Server Compact Edition. There's a part about performance, best practices and his own benchmarks (~37:00).
In short, keep it open, try to reuse commands, and use SqlCeResultSet for bulk operations.
回答2:
For my device, I kept it open during the lifetime of the application. If the functionality of the application depends on the SQLCE connection throughout, this makes sense.
回答3:
Get Late, Release Early. Open the Connection as late as possible in the operation, and close it as soon as is possible. Open SQL connections are not good.
来源：https://stackoverflow.com/questions/386223/sqlce-connections-keep-them-open-or-let-them-close