Using NGUI to parse XML/Json

Is it Possible to parse parse XML/Json using NGUI. Actually I am trying to create a in Game level Editor where I have created a Grid and added a spawn Button to spawn Object directly on the grid.But Problem is that I want to save the object which are placed on the grid in form of xml/json so that they can be loaded when required like an in game level editor But i dont know How to achieve this part Please Help ...!