Why EntityFramework Migration does not read App.xaml.cs in WinUI 3?

[soroshsabz]

ITNOA

I have a WinUI 3 project using GenericHost (based on default WinUI 3 Visual Studio template)

       Host = Microsoft.Extensions.Hosting.Host.
        CreateDefaultBuilder().
        UseContentRoot(AppContext.BaseDirectory).
        ConfigureServices((context, services) =>
        {
            // Default Activation Handler
            services.AddTransient<ActivationHandler<LaunchActivatedEventArgs>, DefaultActivationHandler>();

            // Other Activation Handlers
            services.AddTransient<IActivationHandler, AppNotificationActivationHandler>();

            // Services
            services.AddSingleton<IAppNotificationService, AppNotificationService>();
            services.AddSingleton<ILocalSettingsService, LocalSettingsService>();
            services.AddSingleton<IThemeSelectorService, ThemeSelectorService>();
 

            // Configuration
            services.Configure<LocalSettingsOptions>(context.Configuration.GetSection(nameof(LocalSettingsOptions)));

            services.AddDbContext<WinUIContext>(options =>
              options.UseSqlServer(context.Configuration.GetConnectionString("WinUIContext")));
        }).
        Build();

I want to use EntityFramework Core and using Migration, but when I try to add migration like below

Add-Migration InitialCreate -Verbose

I got no erors, but EntityFramework does not create any migration files.

Using project 'Source\WinUITest\WinUI3'.
Using startup project 'Source\WinUITest\WinUI3'.
Build started...
Build succeeded.
C:\Program Files\dotnet\dotnet.exe exec --depsfile D:\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\bin\x64\Debug\net7.0-windows10.0.19041.0\win10-x64\WinUI3.deps.json --additionalprobingpath C:\Users\sooro\.nuget\packages --additionalprobingpath "C:\Program Files (x86)\Microsoft Visual Studio\Shared\NuGetPackages" --runtimeconfig D:\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\bin\x64\Debug\net7.0-windows10.0.19041.0\win10-x64\WinUI3.runtimeconfig.json C:\Users\sooro\.nuget\packages\microsoft.entityframeworkcore.tools\6.0.19\tools\netcoreapp2.0\any\ef.dll migrations add InitialCreate --json --verbose --no-color --prefix-output --assembly D:\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\bin\x64\Debug\net7.0-windows10.0.19041.0\win10-x64\WinUI3.dll --project D:\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\WinUI3.csproj --startup-assembly D:\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\bin\x64\Debug\net7.0-windows10.0.19041.0\win10-x64\WinUI3.dll --startup-project D:\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\WinUI3.csproj --project-dir D:\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\ --language C# --configuration Debug --working-dir D:\Source\Repos\soroshsabz\TestSolution --root-namespace WinUI3 --nullable
Using assembly 'WinUI3'.
Using startup assembly 'WinUI3'.
Using application base 'D:\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\bin\x64\Debug\net7.0-windows10.0.19041.0\win10-x64'.
Using working directory 'D:\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3'.
Using root namespace 'WinUI3'.
Using project directory 'D:\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\'.
Remaining arguments: .
Finding DbContext classes...
Finding IDesignTimeDbContextFactory implementations...
Finding application service provider in assembly 'WinUI3'...
Finding Microsoft.Extensions.Hosting service provider...
Using environment 'Development'.

As you can see in details log, EntityFramework does not can find any classes and method.

How to resolve this?

Note: My full source code is https://github.com/soroshsabz/TestSolution

Update 7/11/2023

As @jeaninez-msft says in comment, to change migration command to

Add-Migration InitialCreate -Verbose -Project WinUI3.Data -StartupProject WinUI3

I retry migration, and anything does not work too. I attach new log below

PM> Add-Migration InitialCreate -Verbose -Project WinUI3.Data -StartupProject WinUI3
Using project 'Source\WinUITest\WinUI3.Data'.
Using startup project 'Source\WinUITest\WinUI3'.
Build started...
Build succeeded.
C:\Program Files\dotnet\dotnet.exe exec --depsfile C:\Users\sooro\Documents\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\bin\x64\Debug\net7.0-windows10.0.19041.0\WinUI3.deps.json --additionalprobingpath C:\Users\sooro\.nuget\packages --additionalprobingpath "C:\Program Files (x86)\Microsoft Visual Studio\Shared\NuGetPackages" --runtimeconfig C:\Users\sooro\Documents\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\bin\x64\Debug\net7.0-windows10.0.19041.0\WinUI3.runtimeconfig.json C:\Users\sooro\.nuget\packages\microsoft.entityframeworkcore.tools\6.0.19\tools\netcoreapp2.0\any\ef.dll migrations add InitialCreate --json --verbose --no-color --prefix-output --assembly C:\Users\sooro\Documents\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\bin\x64\Debug\net7.0-windows10.0.19041.0\WinUI3.Data.dll --project C:\Users\sooro\Documents\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3.Data\WinUI3.Data.csproj --startup-assembly C:\Users\sooro\Documents\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\bin\x64\Debug\net7.0-windows10.0.19041.0\WinUI3.dll --startup-project C:\Users\sooro\Documents\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\WinUI3.csproj --project-dir C:\Users\sooro\Documents\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3.Data\ --language C# --configuration Debug --working-dir C:\Users\sooro\Documents\Source\Repos\soroshsabz\TestSolution --root-namespace WinUI3.Data --nullable
Using assembly 'WinUI3.Data'.
Using startup assembly 'WinUI3'.
Using application base 'C:\Users\sooro\Documents\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3\bin\x64\Debug\net7.0-windows10.0.19041.0'.
Using working directory 'C:\Users\sooro\Documents\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3'.
Using root namespace 'WinUI3.Data'.
Using project directory 'C:\Users\sooro\Documents\Source\Repos\soroshsabz\TestSolution\Source\WinUITest\WinUI3.Data\'.
Remaining arguments: .
Finding DbContext classes...
Finding IDesignTimeDbContextFactory implementations...
Finding application service provider in assembly 'WinUI3'...
Finding Microsoft.Extensions.Hosting service provider...
Using environment 'Development'.

Update 7/13/2023

My DbContext like below

public class WinUIContext : DbContext
{
        public WinUIContext(DbContextOptions<WinUIContext> options)
            : base(options)
        {
            var folder = Environment.SpecialFolder.LocalApplicationData;
            var path = Environment.GetFolderPath(folder);
            DbPath = Path.Join(path, "WinUITest.db");
        }

        public DbSet<EntityFirst> EntityFirsts
        {
            get;
            set;
        }
        public object DbPath
        {
            get;
        }
    }

This question ask in https://stackoverflow.com/q/76642800/1539100 too

[soroshsabz]

@codendone Did you have any idea about this?

thanks