AstoriaDataSource is a datasource component for Silverlight 3 that enables you to easily perform data operations against ADO.NET data service with just simple XAML markup declaration. When integrated with Intersoft data bound components for Silverlight such as GridPresenter, all data operations such as sorting, filtering, grouping, and editing can be enabled with just some property sets, eliminating the needs to write codes. AstoriaDataSource handles repetitive data access operation and ultimately transforms lengthy codes into simple, easy-to-maintain declarative markups.