“Startup.cs -Klasse fehlt in .net 6” Code-Antworten

Startup.cs -Klasse fehlt in .net 6

In .NET 6 Microsoft has removed the Startup.cs class. 
Now when you'll add a connection string then you've to use builder.Services.
AddDbContext The old way is services.AddDbContext

Just use builder.Services and then you can achieve what you want.