ASP.NET Core Process Hosting and Configuration Issue

​Since ASP.NET Core 2.2 was released I have been working on getting all my different applications updated and using in-process hosting. I pretty quickly hit an issue with an application that uses SQLite. As soon as the application tried to access the database I ended up with the following error.

SqliteException: SQLite Error 14: ‘unable to open database file’. Microsoft.Data.Sqlite.SqliteException.ThrowExceptionForRC(int rc, sqlite3 db) Microsoft.Data.Sqlite.SqliteConnection.Open() Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenDbConnection(bool errorsExpected)

Issue and Work Around

After some Googling, I found an issue on GitHub that details the problem. It turns out that when the application gets its current directory it is returning the path to the IIS process that is hosting the application instead of the directory when the application is.

On another GitHub issue, I found a link to a recommended workaround. Add the following class somewhere in your application. This code comes here.

CODE

​Finally, in the Main function of the Program class add the following line as the first thing in the function.

Main Function

Conclusion

​With the above changes, all will work as expected. It is my understanding that this issue will be addressed at some point in the future as a patch so this should just be a temporary fix.