Add a parameterless AddPooledDbContextFactory overload

[christophe-mommer]

Why does the EF Core 9 method AddPooledDbContextFactory<> doesn't have a parameterless method, like AddDbContextFactory<> ?
I'm using the DbContext in two different way:
AddDbContext<> for my MVC pages
AddPooledDbContextFactory<> for my Blazor components integrated in my MVC app

However, I need to switch back to AddDbContextFactory, because the AddPooledDbContextFactory doesn't have any parameterless method and beause of the new way to handle configuration, I need to call ConfigureDbContext<>(opt=>{...}) before my registrations to avoid exceptions.

EF Core version: EF Core 9 RC1
Database provider: Microsoft.EntityFrameworkCore.SqlServer
Target framework: .NET 9
Operating system: Windows 11
IDE: Visual Studio 2022 17.12 p2

[AndriySvyryd]

@christophe-mommer You should be able to call .AddPooledDbContextFactory<T>(_ => {})

[christophe-mommer]

@AndriySvyryd Hum, not sure about this...
When I do that, I have en exception:
System.InvalidOperationException : 'The property ConnectionString wasn't initialized.'

It only happens when I use DbContexts from the factory

Here's my configuration:

services.ConfigureDbContext<HTSLearningDbContext>(ConfigureDbCtx);
services.AddPooledDbContextFactory<HTSLearningDbContext>(_ => { });
//services.AddDbContextFactory<HTSLearningDbContext>();
services.AddDbContext<HTSLearningDbContext>();

[AndriySvyryd]

services.ConfigureDbContext(ConfigureDbCtx);
services.AddPooledDbContextFactory(_ => { });
//services.AddDbContextFactory();
services.AddDbContext();

I tried this and it works fine. Can you share a small console app runnable project that shows the exception?

[bkarakaya01]

Opened PR #37144 to implement this enhancement (adds parameterless and poolSize overloads for AddPooledDbContextFactory, with tests).
Maintains full backward compatibility. Would appreciate your guidance or review when convenient.