IServiceScopeFactory

sample.cs

public class FooService
{
    private readonly IServiceScopeFactory _scopeFactory;
    
    public FooService( IServiceScopeFactory scopeFactory )
    {
        _scopeFactory = scopeFactory;
    }
    
    public void DoSomething()
    {
        using IServiceScope scope = _scopeFactory.CreateScope();
        
        var barService = scope.Services.GetRequiredService<IBarService>();
        barService.DoWhateverWithTheService();
    }
}