Unable to open SQLite database file from local data store of UWP app - sqlite

Question

I'm using this section of this official MSDN tutorial: Use a SQLite database in a UWP app but I'm getting the following error:
REMARK: There are many online posts related (or similar) to this issue but none seems to have a solution. Most of these posts are a few years old so I thought this issue would have been resolved by now. Moreover, the above mentioned tutorial is using .NET Standard Class library project, as well. And the online posts regarding the issue do not have .NET Standard involved. So, I was wondering if the issue is caused by the use of .NET Standard library. Regardless, a solution will be greatly appreciated.
SQLite Error 14: 'unable to open database file'
Error occurs at line db.Open() of this code:
public static void InitializeDatabase()
{
using (SqliteConnection db =
new SqliteConnection("Filename=sqliteSample.db"))
{
db.Open();
String tableCommand = "CREATE TABLE IF NOT " +
"EXISTS MyTable (Primary_Key INTEGER PRIMARY KEY, " +
"Text_Entry NVARCHAR(2048) NULL)";
SqliteCommand createTable = new SqliteCommand(tableCommand, db);
createTable.ExecuteReader();
}
}
NOTES:
The line just below the above code reads: This code creates the SQLite database and stores it in the application's local data store. That means the app should have access to that local data store.
I'm using latest version 16.3.5 of VS2019 on Windows 10. The target version on the project is selected as Windows 10 1903 and min version as Windows 10 1903
UPDATE
This similar official 3 years old sample works fine. So, the problem seems to be related to newer versions of .NET Core. But I need to use latest version of .NET Core for other features my app is using that are not available in the older versions.
I also tried this similar old tutorial, but it did not on new version of .NET Core work either - giving exact same error.
The old problem reported in 2016 here to Microsoft seems to have resurfaced again with the new version of .NET Core.

Answer 1

This is a misunderstanding, SqliteConnection db = new SqliteConnection("Filename=sqliteSample.db") can not create a Sqlite file, but access the existing Sqlite database file through the path.
So you need to create a valid sqliteSample.db file and place it in the root directory of the UWP project. Select the content in the Properties -> Build operation to ensure it will be loaded into the application directory.
Update
Please create the sqliteSample.db file in LocalFolder first.
await ApplicationData.Current.LocalFolder.CreateFileAsync("sqliteSample.db", CreationCollisionOption.OpenIfExists);
Then use the path to access the database file
string path = Path.Combine(ApplicationData.Current.LocalFolder.Path, "sqliteSample.db");
using (SqliteConnection db =
new SqliteConnection($"Filename={path}"))
{
// ...
}
Best regards.