download a book for c# useful tricks

Question

I just want to download a book for c# useful tricks
Can you suggest me a book?

Answer 1

ÃKR ,Царь СОБАКА - Догго I
I want trick
Just like opening cd-rom or shutdown system or something else

Answer 2

https://code.sololearn.com/W8iMGXTusS8V/?ref=app
https://www.sololearn.com/discuss/708938/?ref=app
https://www.sololearn.com/discuss/601660/?ref=app

Answer 3

ÃKR
Just trick