how to query data on parse.com use curl to c#

Question

curl -X GET \

-H "X-Parse-Application-Id: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \

-H "X-Parse-REST-API-Key: bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb" \

-G \

--data-urlencode 'where={"playerName":"Sean Plott","cheatMode":false}' \

https://api.parse.com/1/classes/GameScore