Can I use the occasion to recommend an VERY good book on modern C# programming: "Functional Programming in C#" by Enrico Buonnano:

https://www.goodreads.com/book/show/31550964-functional-prog...

I'm only a few chapters in, but already it has transformed my C#-writing in many ways, and I have ton of practical ideas on how to better structure my programs in a functional way as I go on.