A very basic .NetCore application using MySQL as database with two controllers:
https://localhost:5001/api/values
The result is:-
["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"]
https://localhost:5001/api/values/3
The result is:-
Wednesday
The result is:-
[{"id":1,"dayName":"Sunday"},{"id":2,"dayName":"Monday"},{"id":3,"dayName":"Tuesday"},{"id":4,"dayName":"Wednesday"},{"id":5,"dayName":"Thursday"},{"id":6,"dayName":"Friday"},{"id":7,"dayName":"Saturday"}]
https://localhost:5001/api/values/3
The result is:-
{"id":3,"dayName":"Tuesday"}