Application Deployment Persistence
I hope I am asking this in the proper group. I have developed a simple
inventory application using C# and MS SQL Server CE for a Unitech
PA-962 Windows CE 4.2 based hand held scanner. The problem is If I
remove the battery, I lose the deployment. Is there a way to deploy
the application in a more persistent fashion? Any help would be
Re: Application Deployment Persistence
On 15 Feb 2006 20:56:54 -0800, "Samchep" <firstname.lastname@example.org> wrote:
>I hope I am asking this in the proper group. I have developed a simple
>inventory application using C# and MS SQL Server CE for a Unitech
>PA-962 Windows CE 4.2 based hand held scanner. The problem is If I
>remove the battery, I lose the deployment. Is there a way to deploy
>the application in a more persistent fashion? Any help would be
This question has been discussed and answered several times, so google
would yield answers. But I can't think of a good search string so I'll
answer directly. Please use google for more info if my answer isn't
Until recently, all Windows CE devices used RAM for bulk storage
(pseudo-disk space), and RAM needs constant current to retain its
memory. The two implications are that an older Windows CE device is
_never_ completely off unless its battery is dead, and a dead batter
means all bulk memory is erased (as you discovered). For Windows
Mobile 5, Microsoft has decreed that bulk storage must be persistent.
That means it does not need constant current and retains its memory
even when the battery goes dead. The down side is a significant loss
You have two choices:
1)Install on a storage card (CF or SD), and make sure your application
keeps its data on the same card.
2) Install in main memory, but put together a utility to reinstall
from storage card. If your application needs to maintain data, you can
put together some sort of backup utility, and then include a data
recovery utility with your automated reinstall.
The former is simpler, but likely to make your application slow.
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Robert E. Zaret, eMVP
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