Query a list for distinct and top 1

Hi there

I am wondering what would be the best way to query a list for distinct value in one column and sorted by other one and get the top 1 record.

In tsql I would do something like that if I want to see the all customers last Order  

SELECT   Customer   , MAX(LastOrderDate) AS LastOrder
FROM      CustomerOrder   
GROUP BY Customer   

How can I apply this query to list with CMAL or Linq query?

Thanks