windows phone 8 - All files in IsolatedStorageFile store disappear after rebuilding WP8 Silverlight solution -


i'm developing wp8 silverlight app uses isolatedstoragefile store app's data. @ point detected if issue rebuild solution command in vs.net, vs uses full deployment of project emulator or attached device instead of incremental deployment. typical build output in case looks this:

2> connecting emulator 8.1 wxga 4.5 inch...
2> application installed on device. checking if incremental deployment possible...
2> doing full deployment project cleaned , rebuilt...
2> uninstalling application...
2> installing application...

sure, app's settings , data stored in isolatedstoragefile disappear @ that.

as developer, may need rebuild solution time time, or unpack archive backup do. means end users lose data when publish new version of app in marketplace after rebuilding project!

my question how save data on device after deploying rebuilt wp8 silverlight project it? there file, or setting in 1 of files produced while compilation responsible (maybe, guid, or time stamp)? can saved , added new rebuilt stuff prevent data loss next app deployment?

isolatedstorage data deleted whenever app uninstalled, vs when rebuild project. not case when end users update app. app updated rather uninstalled. preserve data isolatedstorage.


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