WCF with windows 7 Phone mysql connection

Hi all, i am using WCF to connect to a mysql database, which is fine i can retrieve the data that i want but normally when working with databases i would return the data as a dataset, however WP7 does not use datasets so i was wondering what type of data structure do you suggest when i return the data from my WCF connection when calling it from from WP7 as a service reference?

Any advice would be great

ps i don't think matter but just to let you know the data types will be : int, String and byte