"In your project file make sure the language version is set to preview since switch expressions are a new C# 8.0 feature." There's also a convert if statements to switch statements or switch ...

1) put the config in the app.config of the EXE using your DLL. or 2) don't use the built-in config system. Just use a plain-old-XML file. I mean, you know it's always going to be for Oracle, how ...