Using Linq to SQL, how do I find min and max of a column in a table?

Question

I want to find the fastest way to get the min and max of a column in a table with a single Linq to SQL roundtrip. So I know this would work in two roundtrips:

Answer 1

I'm not sure how to translate it into C# yet (I'm working on it)

This is the Haskell version

minAndMax :: Ord a => [a] -> (a,a)
minAndMax [x]    = (x,x)
minAndMax (x:xs) = (min a x, max b x)
                   where (a,b) = minAndMax xs

The C# version should involve Aggregate some how (I think).