Visual Studio provides a "Background Application (IoT)" template which i want to use to create a headless webservice. To persist some data i want to use Entity Framework with SQLite as DB-Engine .
After upgrading UWP to 5.2.2 and installing Sqlite and EFCore.Tools and adding a DbContext i wanted to migrate the first version. It fails:
PM> Add-Migration MyFirstMigration
Project 'BackgroundApplication4' is a Windows Runtime component. The Entity Framework Core Package Manager Console Tools don't support this type of project.
I thinks it's not a problem with EF itself, because it worked for me with a simple "Blank App". Now there are some questions coming up: Is a "Background Application" really a WinRT-Component and has a different (unsupported) handling by EF?
I thought UWP is an extension of WinRT so basically each UWP-App must be a WinRT-Component?
EF in a Windows Runtime component is a no-go; but that is not so bad since WinRT component can depend on class libraries. So move all your EF classes to a own class libary and consume that library from your background task in your Windows Runtime component.
By doing this you can also use the same class library also in the foreground app when needed.
P.s. Check the github page of EFCore and UWP. There are lot of issues especially in combination with .net native. so using EF.core in UWP will cause you lot of headache; but it is possible.