I'm developing a Windows Universal App, I need to share a database for all the users' account existing on pc.
Is it possible? What's the best solution?
Thanks
In Universal Apps the app data is stored in an app data store. When an app is installed, the system gives it its own per-user data stores for settings and files. So what you are asking is not possible using the native app data APIs.
Also note:
The system preserves the contents of these data stores when the user
installs an update to your app and removes the contents of these data
stores completely and cleanly when your app is uninstalled.
Source: Store and retrieve settings and other app data
Related
I am creating a program that will be submitted to AppStore to be distributed on Mac OS. The application needs to store several user settings in an xml file on file system.
I am using Xamarin.Mac (aka Monomac) platform to create a program.
Where is my app supposed to save application User-specific data on filesystem?
Perhaps, Xamarin.Mac already has some classes to provide developer with an encapsulated way to access these.
You can find app preferences in $HOME/Library/Preferences folder.
I came across the term "IsolatedStorage" in windows phone. Can anybody explain it in detail how is it related to windows phone applications? Also how does it affect while application version upgrade?
Isolated Storage refers the private read / write directories that each app has for storing their own data. It is isolated from all other apps on the system. When an app is upgraded via the store on an end-user's machine, the isolated storage is preserved.
Note that during development, Isolated Storage of an app can be deleted if you do a full rebuild of the project.
IsolatedStorage is a way of allowing apps to save files locally to the application within a device. Until the app is uninstalled, the IsolatedStorage for the application is persisted. If the user upgrades the app in the store, as long as there isn't a change in the way the IsolatedStorage is implemented, it will also be preserved during the update.
Hi How do I delete a local file in my application after copying it to the IsolatedStorage?
I want to delete only the file in local folder. Not in the Isolated Storage. I'm using WP 7.1.
tnks
You don't have write access to the folder where your application is installed. It's therefore impossible to delete the file.
Windows Phone is designed to be one of the most secure environments in the mobile market. If you look at many of the standards it enforces you will see that this is a consistent theme.
For example:
Your app does not have the ability to intercept calls or text
messages (though the library exists)
Your app cannot modify hardware buttons (there is a few MINOR
exceptions to this rule like manipulating the back button event)
Your app cannot access memory locations outside of the Isolated
Storage it is assigned by the phone.
These standards are put in place to protect the user from malicious software and to keep a clean and consistent feel across the environment.
Protecting user files with File History talks about File History, which is basically a continuous backup for Windows 8. The blog discusses File History in depth, and also discusses how to integrate SkyDrive.
I want to programmatically disable backup of certain files. The files live on another server, and there's no need to back them up locally or put them on someone else's cloud. The blog and related articles doe not talk about opt'ing out of the service for application data.
How does one programmatically: (1) disable local file backups; and (2) disable cloud based backups. I'm interested in settings for both Windows 8 (desktop or laptop) and Windows Phone 8.
Related: Both Android and Apple have similar. For Android, we add android:allowBackup and set it to false in AndroidManifest.xml. For Apple, we can use kCFURLIsExcludedFromBackupKey file property or com.apple.MobileBackup extended attribute.
Jeff
In Windows Phone 8, backup and restore settings are controlled by the user through system settings. An app cannot prevent itself from being backed up. However, note that the backup does not store any data associated with third party apps but rather only stores a list of installed apps
So basically you don't need to do anything in your app to prevent local files from being stored on SkyDrive if the user has enabled backup.
In Windows 8 everything can be backed up since an admin user will have full access to his computer files, I don't think you can restrict this. If you have sensitive data you can use DataProtectionProvider to protect it.
I'm new to building application on Mac. I have global data that I need to share between users and not sure where to store this data on Mac to avoid permissions issues when reading and writing files.
On Windows I have stored it in /ProgramData/ in the past.
Changeable goes in /Library/Application Support/application-name however note you will need to ask for an admin username and password.
If the data is never change or only at install then it can be held inside the Application bundle.
Read all about this in the Apple docs