Creating gridview from json data string

Okay I searched and searched but I keep hitting a dead end...
I am getting a string of json data back from an api call to a third party website. Here is an example of what it looks like:
{"results":[{"bioguide_id":"L000563","chamber":"house","first_name":"Daniel","last_name":"Lipinski"},{"bioguide_id":"K000360","chamber":"senate","first_name":"Mark","last_name":"Kirk"},{"bioguide_id":"D000563","chamber":"senate","first_name":"Richard","last_name":"Durbin"}],"count":3,"page":{"count":3,"per_page":20,"page":1}}
I want to extract the chamber, first name and last name from this json data and display it in a gridview. I have been trying to figure th ...