WPF Datagrid Ленивая загрузка

Details

1. VS-2008 Professional SP1
2. Version .net 3.5
3. Language:C#

I have a WPF Datagrid which loads from Linq-sql query Datacontext data item.The result set contains around 200k rows and its it very slow loading them,sorting,filtering etc. What is the simple and easy way to improve the speed?

Couple of things I saw searching are Scrollview, виртуализация данных и т. Д. Люди также говорят о разбивке по страницам, профилировании и т. Д.