Connecting to WCF service from windows8 Phone app

Hi,

Good Evening,

In my windows8 application I need to connect to the wcf service where the service method accepts the argument as the class and the service method returns bool value based on the sending inputs for the class and checks with the database fields.So how can I communicate with the service and the service is restful service.
Please give me the solution as I am unable to find

Thank You,
Bodepudi Mahesh.