Data storage is vital for applications that monitor user progress and allow login or perform any other essential function. There are many methods to store information about users however the most efficient solution is dependent on the issue you're trying solve.

Local storage is great for the storage of small amounts of data that don't need instant syncing, such as login or user registration data. However, it's restricted by the size of the hard drive and is only accessible via client-side code (and isn't manipulated through server-side scripts). Local storage is also susceptible to lose data if an application is deleted, or the device is reset.

The database storage is ideal for storing large quantities of data which may need to edited. It lets you keep an eye on the data of your users by storing their unique identifier in an existing database table, and referencing that identifier when accessing the database. This is more complex than other data storage options, but it can be suitable for enterprise or large-scale apps that need to store the user's data across multiple sessions.

WebView2 stores the data of your browser using UDFs. This includes permissions, cookies and cached resources. This data expires based upon the user's Web and Application Activity settings. It is cleared manually using actions on Google. To store additional user information it is necessary to define an appropriate UDF location that has write access to the WebView2. See the WinUI 3.cs file in the WebView2Samples repo for an example of how to do this with ICoreWebView2Environment7.

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