troubleshooting Question

Clickonce Update sqlce database and re-populate data

Avatar of lostinthegame
lostinthegame asked on
ProgrammingVisual Basic.NETInstallation
7 Comments2 Solutions1165 ViewsLast Modified:, visual studio 2010, sqlce 3.5 database

I have a project that uses clickonce to deploy automatic updates.  Clickonce overwrites the user's current database every time I publish an update, which I can get around by excluding the database from my project when I publish the update.  My issue is that I now need to adjust the schema of the database, for example, add a new column to an existing table.

If I publish the update with the database, the user loses all of their existing data.  I'm not sure how to get around this.  So far, I have set the program up to create a backup of the database everytime the program opens.  The backup is located in an area that will not be unistalled or overwritten by the update, but I don't now how to pull the data from the backup into the new blank database that has the updated schema.

Does anyone have any ideas or a different way to handle this issue?  The end result needs to be that if I publish an update with an updated database schema, the user does not lose their data either by altering their existing database columns or re-populating the data from their database backup into the new database.
Vadim Rapp

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