TreeGridDataSourceActionAttribute Class

this is an attribute class which extends the MVC FilterAttribute. It should be put on top of the controller method that should return JSON (even though in the user code it will return Action Result). It inherits GridDataSourceActionAttribute as adding specific for the TreeGrid functionality

public class TreeGridDataSourceActionAttribute : GridDataSourceActionAttribute 

'Declaration
 
Public Class TreeGridDataSourceActionAttribute 
   Inherits GridDataSourceActionAttribute