Hi @shaikhnoman.nasir, welcome to the community!
It looks like for C# you will need to write your query in JSON. Have you ever done this before?
If not, I would definitely check out some resources online. I also found this super helpful thread that my colleague solved: How to format the JSON string to match the "try-it-yourself" query I've made? API v2 - #2 by Alex.M.
Does this help at all? If not, feel free to DM me with more details about your request.
-Helen